A method and apparatus for wireless communication

Abstract

The application discloses a method and device for wireless communication, comprising receiving first signaling, a second RNTI is used for generating a scrambling code of the first signaling, the first signaling is used for indicating a first time-frequency resource; receiving a first signal on the first time-frequency resource; a first bit block is used for generating the first signal; the first signaling indicates a new transmission; the first signaling indicates that a HARQ process number of the first signal is a first HARQ process number; the second RNTI is used for generating a scrambling code of the first signal; the method can realize discontinuous reception in point-to-multipoint transmission.

Description

[0001] This application is a divisional application of the following original application:

[0002] --Original application date: February 9, 2022

[0003] --Original application number: 202210121092.3

[0004] --Original application title: A method and device for wireless communication Technical Field

[0005] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to methods and apparatus for broadcast and multicast services, power saving, and discontinuous reception in wireless communication. Background Technology

[0006] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to conduct research on New Radio (NR) (or Fifth Generation, 5G). The 3GPP RAN #75 plenary meeting adopted the NR WI (Work Item), and began the standardization work of NR.

[0007] In communications, both LTE (Long Term Evolution) and 5G NR involve reliable and accurate reception of information, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system architecture, efficient non-access stratum information processing, low service interruption and drop rate, and support for low power consumption. These are crucial for normal communication between base stations and user equipment, rational resource scheduling, and balanced system load. They are the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and enhancing service quality. They are indispensable for eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, there are extensive needs in IIoT (Industrial Internet of Things), V2X (Vehicle-to-X), Device-to-Device communication, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, NTN (Non-Territorial Network), TN (Territorial Network), dual connectivity systems, radio resource management and codebook selection for multiple antennas, signaling design, neighbor cell management, service management, and beamforming. Information transmission methods include broadcast and unicast, both essential for 5G systems as they are highly helpful in meeting these needs. The UE can connect to the network directly or via a relay.

[0008] As system scenarios and complexity continue to increase, higher demands are placed on reducing interruption rates, reducing latency, enhancing reliability, improving system stability, increasing business flexibility, and saving power. At the same time, compatibility between different systems and versions needs to be considered during system design. Summary of the Invention

[0009] In various communication scenarios, discontinuous reception mechanisms are needed to save power. Multicast and Broadcast Service (MBS), frequently used for video transmission, consumes significant bandwidth and power. On the other hand, MBS may also be applied to numerous IoT devices to reduce network resource consumption, making power saving crucial for IoT devices. Therefore, terminals using MBS services generally have a need for power saving. Discontinuous reception is an effective means of saving power. Discontinuous reception means that the terminal only needs to listen to the downlink control channel and receive service data during active periods, and can remain idle at other times. MBS transmission methods include point-to-point (PTP), point-to-multipoint (PTM), and hybrids of both, making discontinuous reception methods more complex than for unicast services. Implementing discontinuous reception involves multiple aspects, as the receiving behavior itself may include multiple aspects, such as listening, receiving, and retransmission. For example, using HARQ retransmission differs from not using HARQ retransmission. MBS services can also support HARQ, with more complex and flexible methods than unicast services. For example, MBS can support ACK / NACK-based HARQ feedback or NACK-only HARQ feedback. The initial transmission of MBS uses PTM, and retransmissions can use either PTP or PTM, features not available in unicast services. In systems supporting retransmission, the terminal needs to receive retransmitted data, thus requiring it to remain active while the network sends retransmitted data. This active state is typically achieved by controlling specific timers. If retransmission is not supported, these functions are unnecessary. In MBS, how to support discontinuous reception for retransmissions when multiple retransmission methods exist simultaneously is a problem that needs to be solved. On one hand, due to the unique characteristics of PTM transmission and the MBS service itself, the control of discontinuous reception in MBS using PTM transmission may need to be independent of the control of discontinuous reception in traditional unicast services. On the other hand, if both the initial transmission and retransmissions of MBS use PTP, then using the discontinuous reception mechanism of traditional non-unicast services might be more appropriate. However, if the initial transmission is PTM and the retransmission is PTP, or even if some retransmissions use PTM and some use PTP, if MBS uses a separate discontinuous reception control mechanism for PTM transmission, the traditional unicast discontinuous reception control mechanism for PTP may mix the two control mechanisms together, causing confusion or unnecessary complexity. Therefore, how to handle the discontinuous reception of PTP retransmissions in MBS services is a problem that needs to be solved.

[0010] To address the problems mentioned above, this application provides a solution.

[0011] It should be noted that, unless otherwise specified, the embodiments and features in any node of this application can be applied to any other node. Furthermore, unless otherwise specified, the embodiments and features in any embodiment of this application can be arbitrarily combined with each other.

[0012] This application discloses a method used in a first node of wireless communication, comprising:

[0013] Receive a first signaling, a second RNTI is used to generate a scrambling code for the first signaling, the first signaling is used to indicate a first time-frequency resource; receive a first signal on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal;

[0014] Receive a second signaling, the first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; receive a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate a scrambling code for the second signal;

[0015] Send a second feedback signal on a first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; in response to sending the second feedback signal, start a target timer for the HARQ process identified by the first HARQ process number;

[0016] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0017] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0018] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0019] As an example, the problem to be solved by this application includes: when transmitting MBS, if the first transmission uses PTM and the retransmission uses PTP, how to support and implement discontinuous reception (DRX) for PTP retransmission.

[0020] As an example, the advantages of the above method include: the control of discontinuous reception for PTM can be better independent of the traditional control of discontinuous reception for unicast, making the system simpler and easier to implement, and avoiding unnecessary complexity and confusion during the execution process.

[0021] Specifically, according to one aspect of this application, a third signaling is received, wherein the second RNTI is used to generate a scrambling code for the third signaling, and the third signaling is used to indicate a third time-frequency resource; a third signal is received on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; and the third signaling is received after the first signaling.

[0022] A third timer is started, and at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the PDCCH channel is monitored as a response to the third signal not being correctly decoded;

[0023] The third timer is used for discontinuous reception; the second RNTI is the second type of RNTI.

[0024] Specifically, according to one aspect of this application, a first message is received, the first message being used to indicate a first expiration value and a second expiration value;

[0025] Send a first feedback signal, and in response to sending the first feedback signal, start the second timer for the HARQ process identified by the first HARQ process number; the sending of the first feedback signal is later than the receiving of the first signal;

[0026] Wherein, the second RNTI is the second type of RNTI; the first feedback signal occupies one of the first PUCCH resource or the first PUCCH enhancement resource; whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal;

[0027] The meaning of the sentence "Whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is:

[0028] When the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0029] Specifically, according to one aspect of this application, in response to the expiration of the target timer, a third timer that is in a running state is operated;

[0030] During the operation of the third timer, the PDCCH channel is monitored;

[0031] The third timer in the running state of the behavioral operation includes at least one of {restart, maintain, modify expired value}; the third timer is used for discontinuous reception.

[0032] Specifically, according to one aspect of this application, the first signaling includes a first field for indicating the timing between PDSCH and HARQ feedback; the first field includes either a non-numerical indication or a numerical indication used to determine the expiration value of the fourth timer.

[0033] During the operation of the fourth timer, the PDCCH channel is monitored;

[0034] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the first signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the first signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0035] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0036] Specifically, according to one aspect of this application, a first feedback signal is sent, and in response to the sending of the first feedback signal, a second timer for the HARQ process identified by the first HARQ process number is started; the sending of the first feedback signal is later than the receiving of the first signal.

[0037] The first signaling includes a first field, which indicates whether the timing between the PDSCH and the HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal.

[0038] The meaning of the sentence "Whether the first field indicates the timing between PDSCH and HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is: when the first feedback signal occupies the first PUCCH resource, the first field indicates the timing between PDSCH and HARQ feedback; when the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback.

[0039] Specifically, according to one aspect of this application, a first MAC CE is received; the first MAC CE is for the second RNTI; the second RNTI is a second type of RNTI; in response to receiving the first MAC CE, a fifth timer is stopped; the fifth timer is for the second RNTI;

[0040] During the operation of the fifth timer, the PDCCH channel is monitored;

[0041] The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception.

[0042] Specifically, according to one aspect of this application, the first node is a user equipment.

[0043] Specifically, according to one aspect of this application, the first node is an Internet of Things (IoT) terminal.

[0044] Specifically, according to one aspect of this application, the first node is a relay.

[0045] Specifically, according to one aspect of this application, the first node is an in-vehicle terminal.

[0046] Specifically, according to one aspect of this application, the first node is an aircraft.

[0047] A method for use in a second node of wireless communication, comprising:

[0048] Send a first signaling instruction; a second RNTI is used to generate a scrambling code for the first signaling instruction; the first signaling instruction is used to indicate a first time-frequency resource; send a first signal on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling instruction indicates a new transmission; the first signaling instruction indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal.

[0049] Send a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; send a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate a scrambling code for the second signal;

[0050] A second feedback signal is received on a first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; the transmission of the second feedback signal is used to start a target timer for the HARQ process identified by the first HARQ process number.

[0051] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0052] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0053] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0054] Specifically, according to one aspect of this application, a third signaling is transmitted, wherein the second RNTI is used to generate a scrambling code for the third signaling, the third signaling being used to indicate a third time-frequency resource; a third signal is transmitted on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; the third signaling is received after the first signaling.

[0055] At least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the incorrect decoding of the third signal is used to trigger the monitoring of the PDCCH channel;

[0056] The third timer is used for discontinuous reception; the second RNTI is the second type of RNTI.

[0057] Specifically, according to one aspect of this application, a first message is sent, the first message being used to indicate a first expiration value and a second expiration value;

[0058] A first feedback signal is received, and the transmission of the first feedback signal is used to trigger the start of the second timer for the HARQ process identified by the first HARQ process number; the transmission of the first feedback signal is later than the reception of the first signal.

[0059] Wherein, the second RNTI is the second type of RNTI; the first feedback signal occupies one of the first PUCCH resource or the first PUCCH enhancement resource; whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal;

[0060] The meaning of the sentence "Whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is:

[0061] When the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0062] Specifically, according to one aspect of this application, the first signaling includes a first field for indicating the timing between PDSCH and HARQ feedback; the first field includes either a non-numerical indication or a numerical indication used to determine the expiration value of the fourth timer.

[0063] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the first signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the first signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0064] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0065] Specifically, according to one aspect of this application, a first feedback signal is received, the transmission of the first feedback signal being used to trigger the start of a second timer for the HARQ process identified by the first HARQ process number; the transmission of the first feedback signal is later than the reception of the first signal.

[0066] The first signaling includes a first field, which indicates whether the timing between the PDSCH and the HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal.

[0067] The meaning of the sentence "Whether the first field indicates the timing between PDSCH and HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is: when the first feedback signal occupies the first PUCCH resource, the first field indicates the timing between PDSCH and HARQ feedback; when the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback.

[0068] Specifically, according to one aspect of this application, a first MAC CE is sent; the first MAC CE is directed to the second RNTI; the second RNTI is a second type of RNTI; the first MAC CE is used to stop a fifth timer; the fifth timer is directed to the second RNTI;

[0069] The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception.

[0070] Specifically, according to one aspect of this application, the second node is a user equipment.

[0071] Specifically, according to one aspect of this application, the second node is an Internet of Things (IoT) terminal.

[0072] Specifically, according to one aspect of this application, the second node is a relay.

[0073] Specifically, according to one aspect of this application, the second node is an in-vehicle terminal.

[0074] Specifically, according to one aspect of this application, the second node is an aircraft.

[0075] This application discloses a first node used for wireless communication, comprising:

[0076] A first receiver receives a first signaling, a second RNTI is used to generate a scrambling code for the first signaling, the first signaling is used to indicate a first time-frequency resource; a first signal is received on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal.

[0077] The first receiver receives a second signaling, a first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; it receives a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate a scrambling code for the second signal.

[0078] A first transmitter sends a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; in response to sending the second feedback signal, a target timer is started for the HARQ process identified by the first HARQ process number;

[0079] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0080] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0081] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0082] This application discloses a second node used for wireless communication, comprising:

[0083] A second transmitter sends a first signaling message, a second RNTI is used to generate a scrambling code for the first signaling message, the first signaling message is used to indicate a first time-frequency resource; a first signal is sent on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling message indicates a new transmission; the first signaling message indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal.

[0084] The second transmitter sends a second signaling, where a first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; a second signal is transmitted on the second time-frequency resource; a first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; and the first RNTI is used to generate a scrambling code for the second signal.

[0085] The second receiver receives a second feedback signal on a first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; the transmission of the second feedback signal is used to start a target timer for the HARQ process identified by the first HARQ process number.

[0086] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0087] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0088] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0089] As an example, compared with conventional solutions, this application has the following advantages:

[0090] —This solves the implementation problem of discontinuous reception when using PTP for retransmission in MBS transmission. Discontinuous reception for specific G-RNTI and discontinuous reception of traditional unicast can be independent of each other and do not interfere with each other, which helps to simplify system design;

[0091] —When both PTP and PTM retransmission are used, it is beneficial to differentiate between them and to align the retransmission windows of PTM for a specific MBS service of different terminals, which facilitates PTM transmission and saves resources and power.

[0092] —Supports different types of HARQ feedback. Attached Figure Description

[0093] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0094] Figure 1 A flowchart illustrating receiving a first signaling and a first signal, receiving a second signaling and a second signal, sending a second feedback signal on a first PUCCH resource, and starting a target timer for a HARQ process identified by the first HARQ process number is shown according to an embodiment of this application.

[0095] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0096] Figure 3 A schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0097] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0098] Figure 5 A flowchart of wireless signal transmission according to an embodiment of this application is shown;

[0099] Figure 6 A schematic diagram of time-frequency resources according to an embodiment of this application is shown;

[0100] Figure 7 A schematic diagram of a protocol stack according to an embodiment of this application is shown;

[0101] Figure 8 A schematic diagram of the transmission of a first bit block according to an embodiment of this application is shown;

[0102] Figure 9 A schematic diagram is shown illustrating that at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal, according to an embodiment of this application, is used to determine the start of one run of the third timer;

[0103] Figure 10 A schematic diagram is shown showing how the system frame number and the first time length, according to this application, are used together to determine the start of the fifth timer;

[0104] Figure 11 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated;

[0105] Figure 12 A schematic diagram of a processing apparatus for a second node according to an embodiment of this application is illustrated. Detailed Implementation

[0106] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0107] Example 1

[0108] Example 1 illustrates a flowchart of receiving a first signaling and a first signal, receiving a second signaling and a second signal, sending a second feedback signal on a first PUCCH resource, and starting a target timer for the HARQ process identified by the first HARQ process number, according to an embodiment of this application, as shown in the attached flowchart. Figure 1 As shown. (Attached) Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0109] In Embodiment 1, the first node in this application receives a first signaling and a first signal in step 101; receives a second signaling and a second signal in step 102; sends a second feedback signal on the first PUCCH resource in step 103; and starts a target timer for the HARQ process identified by the first HARQ process number in step 104.

[0110] Wherein, the second RNTI is used to generate the scrambling code of the first signaling, the first signaling is used to indicate the first time-frequency resource; the first signal is received on the first time-frequency resource; the first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is the first HARQ process number; the second RNTI is used to generate the scrambling code of the first signal;

[0111] The first RNTI is used to generate the scrambling code for the second signaling, which is used to indicate the second time-frequency resource; a second signal is received on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate the scrambling code for the second signal.

[0112] The first PUCCH resource is used to transmit a first type of HARQ feedback signal; in response to sending the second feedback signal, a target timer is started for the HARQ process identified by the first HARQ process number;

[0113] The first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer depends on whether the second RNTI is the first type of RNTI or the second type of RNTI.

[0114] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0115] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0116] In one embodiment, the first node is a UE (User Equipment).

[0117] As an example, the first node is an MS (Mobile Station).

[0118] As an example, bandwidth adaptation is supported in 5G NR; a subset of the total cell bandwidth of a cell is called a BWP; the base station achieves bandwidth adaptation by configuring a BWP for the UE and telling the UE which of the configured BWPs is currently active.

[0119] As an example, the SpCell of the first node refers to the PCell of the first node.

[0120] As an example, the SpCell of the first node refers to the PSCell of the first node.

[0121] As an example, the serving cell refers to the cell where the UE camps. Performing a cell search includes the UE searching for a suitable cell within a selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone Non-Public Network), selecting the suitable cell to provide available services, and monitoring the control channel of the suitable cell. This process is defined as camping on a cell; that is, a camped cell is the serving cell for the UE. Camping on a cell in RRC idle or RRC inactive state has the following advantages: it allows the UE to receive system messages from the PLMN or SNPN; after registration, if the UE wishes to establish an RRC connection or continue a suspended RRC connection, the UE can perform initial access on the control channel of the camped cell; the network can page the UE; and the UE can receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System) notifications.

[0122] As an example, for a UE in RRC connected state without CA / DC (carrier aggregation / dual connectivity) configured, there is only one serving cell, including the primary cell; if the UE is connected to only one cell, then that cell is the UE's primary cell. For a UE in RRC connected state with CA / DC configured, the serving cell is used to indicate the set of cells including the special cell (SpCell) and all cells from smaller cells; the primary cell (PrimaryCell, PCell) is a cell in the MCG (Master Cell Group), which operates on the primary frequency, and the UE performs the initial connection establishment process or initiates connection reconstruction on the primary cell; for dual connectivity operations, there can also be an SCG (Secondary Cell Group), and the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCG Cell) of the SCG; if it is not a dual connectivity operation, the special cell refers to the PCell.

[0123] As an example, the frequency at which the SCell (Secondary Cell) operates is the frequency of the cell.

[0124] As an example, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between an E-UTRA and an NR node, or dual connectivity between two NR nodes.

[0125] As an example, in MR-DC, the radio access node that provides control plane connection to the core network is the master node, which can be a master eNB, a master ng-eNB, or a master gNB.

[0126] As an example, MCG refers to a group of serving cells associated with the master node in MR-DC, including SpCell, and optionally, one or more SCell.

[0127] As an example, in MR-DC, no control plane connection to the core network is provided; instead, the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, an ng-eNB, or a gNB.

[0128] As an example, in MR-DC, the group of serving cells associated with a slave node is an SCG (secondary cell group), which includes SpCell and, optionally, one or more SCells.

[0129] As an example, PCell is the SpCell of MCG.

[0130] As an example, PSCell is the SpCell of SCG.

[0131] As an example, the individual content of an information element is called a field.

[0132] As an example, an information element is a structured element that includes one or more fields.

[0133] As an example, a multicast radio bearer (MRB) is a radio bearer configured for MBS multicast or broadcast transmission.

[0134] As an example, Multicast Broadcast Service (MBS) is a point-to-multipoint service, detailed in 3GPP TS 23.247.

[0135] As an example, PTP transmission refers to the gNB independently sending separate copies of MBS data packets to each UE. That is, the gNB uses a UE-specific PDCCH (physical downlink control channel) scrambled with a UE-specific RNTI, such as C-RNTI, to schedule the UE-specific PDSCH. The UE-specific PDSCH (physical downlink shared channel) is scrambled with the UE-specific RNTI.

[0136] As an example, PTM transmission refers to: the gNB sending a copy of the MBS data packet to a set of UEs, for example, the gNB using a group common PDCCH scrambled by the group common RNTI to schedule the group common PDSCH.

[0137] As one embodiment, the first signaling includes physical layer signaling.

[0138] As one example, the first signaling includes DCI (Downlink Control Information).

[0139] As a sub-implementation of this embodiment, the first signaling includes a DCI format for scheduling the PDSCH channel.

[0140] As a sub-implementation of this embodiment, the first signaling includes DCI format 1_0 and format 1_1.

[0141] As an example, the physical channel occupied by the first signaling is the PDCCH channel.

[0142] As an example, the PDCCH channel includes a PDCCH channel and a GC-PDCCH channel.

[0143] As an example, the second RNTI is an RNTI; the second RNTI includes 16 bits.

[0144] As an example, the second RNTI is used to scramble the CRC (Cyclic Redundancy Check) bits attached to the first signaling.

[0145] As a sub-implementation of this embodiment, the second RNTI is used to scramble 16 bits of the additional CRC (Cyclic Redundancy Check) of the first signaling.

[0146] As a sub-implementation of this embodiment, the second RNTI is used to scramble the 16 least significant bits of the additional CRC (Cyclic Redundancy Check) of the first signaling.

[0147] As a sub-implementation of this embodiment, the second RNTI is used to scramble the CRC bits appended to the first signaling before channel coding.

[0148] As a sub-implementation of this embodiment, the first signaling is processed as a string of bits by baseband, and the behavior of being processed by baseband includes additional CRC bits.

[0149] As a sub-implementation of this embodiment, the 16 bits of the second RNTI are scrambling codes for the additional CRC bits of the first signaling.

[0150] As one embodiment, the first time-frequency resource includes time resources and / or frequency resources.

[0151] As one embodiment, the first time-frequency resource includes one or more PRBs (physical resource blocks).

[0152] As one embodiment, the first time-frequency resource includes one or more consecutive resource elements.

[0153] As one embodiment, the first time-frequency resource includes one or more discontinuous resource elements.

[0154] As an example, the first signal is transmitted on the first time-frequency resource.

[0155] As an example, the first signal occupies the first time-frequency resource.

[0156] As an example, receiving a first signal on the first time-frequency resource includes steps such as demodulation, descrambling, and decoding.

[0157] As one embodiment, the first signal includes a PDSCH channel.

[0158] As one embodiment, the first signal includes an encoded block or a transmission block.

[0159] As one embodiment, the first signal includes bit outputs corresponding to different redundant versions of the coded block.

[0160] As an example, the first bit block is one of a coding block, a transport block, or a group of coding blocks.

[0161] As an example, the first bit block is the bit after channel coding.

[0162] As one embodiment, the phrase first bit block used to generate the first signal includes modulation, performing OFDM-related transmission processing, and transmitting at a specific antenna port.

[0163] As one embodiment, the phrase first bit block used to generate the first signal includes mapping onto different OFDM subcarriers.

[0164] As one embodiment, the phrase first bit block used to generate the first signal includes at least one of rate matching, setting transmit power, and performing precoding related to multiple antennas.

[0165] As one embodiment, the phrase first bit block used to generate the first signal includes selecting the bit output corresponding to the redundancy version n, or performing rate matching based on the redundancy version n.

[0166] As a sub-example of this embodiment, n equals one of {0,1,2,3}.

[0167] As a sub-example of this embodiment, n equals 0.

[0168] As a sub-example of this embodiment, n is equal to the number of the RV with better independent decoding performance.

[0169] As an example, the value of the NDI field included in the first signaling is flipped compared to the value of the NDI field included in the DCI corresponding to the previous received transmission of the first bit block.

[0170] As a sub-implementation of this embodiment, the HARQ process number of the first signal indicated by the DCI corresponding to the previous received transmission of the first bit block is the first HARQ process number.

[0171] As a sub-example of this embodiment, the DCI corresponding to the previous received transmission of the first bit block is the DCI that scheduled the previous transmission of the first bit block.

[0172] As an example, the current transmission is the first received transmission of the first bit block, that is, there is no previous NDI for the first bit block.

[0173] As a sub-example of this embodiment, the preceding NDI is the NDI field or the value of the NDI field included in the DCI of the previous transmission of the first bit block.

[0174] As a sub-example of this embodiment, the current transmission is the transmission of the first signal.

[0175] As a sub-example of this embodiment, the current transmission is the transmission of the first bit block through the first signal.

[0176] As an example, the first signaling indicating a new transmission includes: the value of the NDI field included in the first signaling has been flipped compared to the value of the NDI field included in the DCI corresponding to the previous received transmission of the first bit block, or the current transmission is the first received transmission of the first bit block, that is, there is no previous NDI for the first bit block.

[0177] As an example, the first signaling indicating a new transmission means that the first signaling does not indicate a retransmission.

[0178] As one embodiment, the first signaling includes a HARQ process number field, which indicates the first HARQ process number.

[0179] As an example, the second RNTI is used to generate a scrambling code for the first signal, which is scrambled by the scrambling code before modulation.

[0180] As an example, the second RNTI is used as the initial parameter for generating the scrambling code of the first signal.

[0181] As a sub-example of this embodiment, the initial parameters of the scrambling code of the first signal are obtained according to a general formula:

[0182] c init =n RNTI ·2 15 +q·2 14 +n ID

[0183] Where, n ID ∈{0,1,...,1023} is indicated by a higher level; q is the codeword number, with a value range such as {0,1}; n RNTI If set as the second RNTI, then the output c init The initial parameters are the scrambling codes of the first signal.

[0184] As a sub-example of this embodiment, the initial parameter of the scrambling code of the first signal is one of the initial parameters of a pseudo-random sequence, and the output of the pseudo-random sequence is the scrambling code of the first signal.

[0185] As one embodiment, the second signaling includes physical layer signaling.

[0186] As one example, the second signaling includes DCI (Downlink Control Information).

[0187] As a sub-implementation of this embodiment, the second signaling includes a DCI format for scheduling the PDSCH channel.

[0188] As a sub-implementation of this embodiment, the second signaling includes DCI format 1_0 and format 1_1.

[0189] As an example, the physical channel occupied by the second signaling is the PDCCH channel.

[0190] As an example, the first RNTI is an RNTI; the first RNTI includes 16 bits.

[0191] As an example, the first RNTI is used to scramble the CRC (Cyclic Redundancy Check) bits attached to the second signaling.

[0192] As a sub-implementation of this embodiment, the first RNTI is used for scrambling 16 bits of the additional CRC (Cyclic Redundancy Check) of the second signaling.

[0193] As a sub-implementation of this embodiment, the first RNTI is used to scramble the 16 least significant bits of the additional CRC (Cyclic Redundancy Check) of the second signaling.

[0194] As a sub-example of this embodiment, the first RNTI is used to scramble the CRC bits appended to the second signaling before channel coding.

[0195] As a sub-implementation of this embodiment, the second signaling is processed as a string of bits by baseband, and the baseband processing includes additional CRC bits.

[0196] As a sub-example of this embodiment, the 16 bits of the first RNTI are scrambling codes for the additional CRC bits of the second signaling.

[0197] As one embodiment, the second time-frequency resource includes time resources and / or frequency resources.

[0198] As one embodiment, the second time-frequency resource includes one or more PRBs (physical resource blocks).

[0199] As one embodiment, the second time-frequency resource includes one or more consecutive resource elements.

[0200] As one embodiment, the second time-frequency resource includes one or more discontinuous resource elements.

[0201] As one embodiment, the second signal is transmitted on the second time-frequency resource.

[0202] As one embodiment, the second signal occupies the second time-frequency resource.

[0203] As one embodiment, receiving a second signal on the second time-frequency resource includes steps such as demodulation, descrambling, and decoding.

[0204] As one embodiment, the second signal includes the PDSCH channel.

[0205] As one embodiment, the second signal includes an encoded block or a transmission block.

[0206] As one embodiment, the second signal includes bit outputs corresponding to different redundant versions of the coded block.

[0207] As an example, the first bit block is one of a coding block, a transport block, or a group of coding blocks.

[0208] As an example, the first bit block is the bit after channel coding.

[0209] As one embodiment, the phrase first bit block used to generate the second signal includes modulation, performing OFDM-related transmission processing, and transmitting it on a specific antenna port.

[0210] As one embodiment, the phrase first bit block used to generate the second signal includes mapping onto different OFDM subcarriers.

[0211] As one embodiment, the phrase first bit block used to generate the second signal includes rate matching and setting the transmit power.

[0212] Perform at least one of the precoding operations related to multiple antennas.

[0213] As one embodiment, the phrase first bit block used to generate the second signal includes selecting the bit output corresponding to the redundancy version m, or performing rate matching based on the redundancy version m.

[0214] As a sub-example of this embodiment, m equals one of {0,1,2,3}.

[0215] As a sub-example of this embodiment, m equals one of {1,2,3}.

[0216] As an example, condition 1 is: the HARQ process identified by the first HARQ process number is equal to the broadcast process, and according to the system message scheduling indicated by RRC, the second signal corresponds to the first received transmission of the first bit block; condition 2 is: the value of the NDI field included in the second signaling is flipped compared to the value of the NDI field included in the DCI corresponding to the previous received transmission of the first bit block; condition 3 is: the current transmission is the first received transmission of the first bit block, that is, there is no previous NDI for the first bit block; conditions 1, 2, and 3 are not satisfied.

[0217] As a sub-implementation of this embodiment, the second signaling used to indicate a retransmission means that conditions 1, 2, and 3 are not satisfied.

[0218] As a sub-implementation of this embodiment, the second signaling is used to indicate a retransmission meaning that conditions 1, 2, and 3 are not satisfied.

[0219] As a sub-implementation of this embodiment, the HARQ process number of the second signal indicated by the DCI corresponding to the previous received transmission of the first bit block is the first HARQ process number.

[0220] As a sub-example of this embodiment, the DCI corresponding to the previous received transmission of the first bit block is the DCI that scheduled the previous transmission of the first bit block.

[0221] As a sub-example of this embodiment, the preceding NDI is the NDI field or the value of the NDI field included in the DCI of the previous transmission of the first bit block.

[0222] As a sub-example of this embodiment, the current transmission is the transmission of the second signal.

[0223] As a sub-example of this embodiment, the current transmission is the transmission of the first bit block through the second signal.

[0224] As an example, the second signaling being used to indicate a retransmission means that the second signaling does not indicate a new transmission.

[0225] As one embodiment, the second signaling includes a HARQ process number field, which indicates the first HARQ process number.

[0226] As an example, the first RNTI is used to generate a scrambling code for the second signal, which is scrambled by the scrambling code of the second signal before modulation.

[0227] As an example, the first RNTI is used as the initial parameter for generating the scrambling code of the second signal.

[0228] As a sub-example of this embodiment, the initial parameters of the scrambling code of the second signal are obtained according to a general formula:

[0229] c init =n RNTI ·2 15 +q·2 14 +n ID

[0230] Where, n ID ∈{0,1,...,1023} is indicated by a higher level; q is the codeword number, with a value range such as {0,1}; n RNTI If set as the first RNTI, then output c init The initial parameters are the scrambling codes for the second signal.

[0231] As a sub-example of this embodiment, the initial parameter of the scrambling code of the second signal is one of the initial parameters of a pseudo-random sequence, and the output of the pseudo-random sequence is the scrambling code of the second signal.

[0232] As an example, the first signal corresponds to the same PDSCH channel as the second signal.

[0233] As a sub-example of this embodiment, the first signal and the second signal are two transmissions on the same PDSCH channel.

[0234] As an example, the first signal and the second signal correspond to different PDSCH channels.

[0235] As an example, the first signaling and the second signaling each indicate a downlink transmission.

[0236] As one embodiment, the first PUCCH resource includes or only includes the PUCCH resources configured by pucch-config.

[0237] As one embodiment, the first PUCCH resource includes or only includes the resource indicated by the PUCCH-ResourceSet.

[0238] As one embodiment, the first PUCCH resource includes or only includes the resource indicated by PUCCH-Resource or PUCCH-ResourceExt.

[0239] As an example, the first PUCCH resource includes a format of type formatExt.

[0240] As an example, the first PUCCH resource includes or only includes the PUCCH resource indicated by PUCCH-Resource with one of the formats {format0, format1, format2, format3, format4}.

[0241] As an example, the first PUCCH resource includes or only includes the PUCCH resource indicated by PUCCH-Resource with one of the formats {format1,format2,format3,format4}.

[0242] As an example, the pucch-formatConfig corresponding to the format of the first PUCCH resource does not include configurations related to NACK-only.

[0243] As an example, the first PUCCH resource is used only to transmit the first type of HARQ feedback signal.

[0244] As an example, the first type of HARQ feedback signal is HARQ-ACK feedback.

[0245] As an example, the first type of HARQ feedback signal is HARQ-ACK-NACK feedback.

[0246] As an example, the first type of HARQ feedback signal is ACK-NACK feedback.

[0247] As an example, the first type of HARQ feedback signal is ACK / NACK feedback.

[0248] As an example, the HARQ feedback signal of the first type can provide an ACK.

[0249] As an example, the first type of HARQ feedback signal is a HARQ feedback signal other than NACK-only.

[0250] As one example, the second feedback signal is HARQ feedback.

[0251] As an example, the second feedback signal is a HARQ feedback signal of the first type.

[0252] As one embodiment, the second feedback signal is the HARQ feedback signal of the second signal.

[0253] As an example, the first node determines whether the second feedback signal is HARQ ACK or HARQ NACK based on whether the first bit block is correctly decoded.

[0254] As an example, the first node determines whether the second feedback signal is HARQ ACK or HARQ NACK based on whether the second signal is correctly decoded.

[0255] As one embodiment, the sending of the second feedback signal triggers the start of a target timer for the HARQ process identified by the first HARQ process number.

[0256] As one embodiment, the first signal is the first transmission, initial transmission, or new transmission of the first bit block.

[0257] As one embodiment, the second signal is a retransmission of the first bit block.

[0258] As an example, between the first signaling and the second signaling, the first node does not receive a DCI indicating the first HARQ process number in the HARQ process number field.

[0259] As an example, a HARQ process ID uniquely identifies a HARQ process.

[0260] As one embodiment, the target timer is one of the first timer or the second timer.

[0261] As one embodiment, the reception of the second signal triggers the transmission of the second feedback signal.

[0262] As one embodiment, the second feedback signal is used to indicate that the first bit block has not been correctly decoded.

[0263] As one embodiment, the transmission of the second feedback signal is later than the reception of the second signal.

[0264] As one embodiment, the second signal is used for decoding the first bit block, and in response to the first bit block not being decoded correctly, the first node sends the second feedback signal.

[0265] As an example, the first type of RNTI includes C-RNTI.

[0266] As an example, the first type of RNTI includes CS-RNTI.

[0267] As an example, the first type of RNTI includes MCS-C-RNTI.

[0268] As an example, the first type of RNTI is C-RNTI.

[0269] As an example, the first type of RNTI is CS-RNTI.

[0270] As an example, the first type of RNTI is MCS-C-RNTI.

[0271] As an example, the second type of RNTI is G-RNTI.

[0272] As an example, the second type of RNTI is a group common RNTI.

[0273] As an example, the second type of RNTI is GS-RNTI.

[0274] As an example, the second type of RNTI is G-CS-RNTI.

[0275] As an example, the second type of RNTI is a non-unicast RNTI.

[0276] As an example, the second type of RNTI is a non-unicast RNTI used for dynamic scheduling.

[0277] As an example, the second type of RNTI is an RNTI specific to MBS.

[0278] As an example, the second type of RNTI is at least one of {G-RNTI, group common RNTI, GS-RNTI, non-unicast RNTI, non-unicast RNTI for dynamic scheduling, and MBS-specific RNTI}.

[0279] As an example, one of the first type of RNTI and the second type of RNTI is for a specific UE, while the other is not for a specific UE.

[0280] As an example, the first type of RNTI is for a specific UE, while the second type of RNTI is not for a specific UE.

[0281] As an example, the second type of RNTI is specific to a particular UE, while the first type of RNTI is not specific to a particular UE.

[0282] As an example, the name of the first timer includes drx.

[0283] As an example, the name of the second timer includes drx.

[0284] As an example, the name of the second timer includes PTM.

[0285] As an example, the name of the second timer includes RNTI.

[0286] As an example, the name of the second timer includes MBS.

[0287] As one example, the name of the second timer includes "type".

[0288] As an example, the expiration values ​​of the first timer and the second timer are respectively configured by the serving cell of the first node.

[0289] As an example, the expiration values ​​of the first timer and the second timer are configured by DRX-Config.

[0290] As an example, the first timer is configured by DRX-ConfigSecondaryGroup.

[0291] As one example, the second timer is configured by DRX-ConfigPTM.

[0292] As one example, the second timer is configured by DRX-ConfigMBS.

[0293] As an example, the first timer is drx-HARQ-RTT-TimerDL.

[0294] As one example, the second timer is drx-HARQ-RTT-TimerDLPTM.

[0295] As an example, the second timer is drx-HARQ-RTT-TimerPTM.

[0296] As an example, the target timer is one of the first timer and the second timer.

[0297] As an example, the first timer is for unicast services.

[0298] As an example, the first timer is configured by MAC-CellGroupConfig.

[0299] As an example, the first timer is configured by CellGroupConfig.

[0300] As one example, the first timer applies to a serving cell.

[0301] As a sub-implementation of this embodiment, the first timer applies to all first-type RNTIs of a serving cell.

[0302] As one example, the first timer applies to the serving cell of a DRX group.

[0303] As an example, the HARQ process for each unicast service is associated with an instance of the first timer.

[0304] As an example, each HARQ process scheduled via C-RNTI is associated with an instance of the first timer.

[0305] As one example, each HARQ process scheduled by the PDCCH scrambled by C-RNTI is associated with an instance of the first timer.

[0306] As one example, the second timer is for a G-RNTI.

[0307] As one example, the second timer is for a second type of RNTI.

[0308] In this embodiment, if the first node listens to or monitors multiple RNTIs belonging to the second type of RNTI, then the first node manages multiple instances of the second timer corresponding to the RNTIs of the second type of RNTI.

[0309] As one example, the second timer is for one RNTI in a second type of RNTI.

[0310] As one example, the second timer corresponds to a G-RNTI.

[0311] As one example, the second timer is mapped one-to-one with a G-RNTI.

[0312] As an example, each HARQ process scheduled by each G-RNTI scrambled PDCCH is associated with an instance of the second timer.

[0313] As an example, a serving cell has only one C-RNTI.

[0314] As a sub-example of this embodiment, the maximum number of instances of the first timer managed by the first node is equal to the maximum number of HARQ processes.

[0315] As an example, a serving cell may have more than one G-RNTI.

[0316] As an example, a serving cell may have more than one second type RNTI.

[0317] As a sub-example of this embodiment, the maximum number of instances of the second timer managed by the first node is equal to the product of the maximum number of HARQ processes and the number of G-RNTIs that need to be listened to or monitored.

[0318] As a sub-example of this embodiment, the maximum number of instances of the second timer managed by the first node is equal to the product of the maximum number of HARQ processes and the number of second-class RNTIs that need to be listened to or monitored.

[0319] As an example, the non-unicast transmission includes the transmission of MBS services.

[0320] As an example, the non-unicast transmission is a PTM transmission.

[0321] As an example, the non-unicast transmission is a non-unicast transmission.

[0322] As one embodiment, whether the second RNTI is the first type of RNTI or the second type of RNTI is used to determine whether the target timer is the first timer or the second timer.

[0323] As an example, the first bit block is used to carry MBS services.

[0324] As one embodiment, the first PUCCH enhancement resource includes or only includes the PUCCH resources configured by pucch-config.

[0325] As one embodiment, the first PUCCH enhancement resource includes or only includes the resources indicated by the PUCCH-ResourceSet.

[0326] As one embodiment, the first PUCCH enhancement resource includes or only includes the resource indicated by PUCCH-Resource or PUCCH-ResourceExt.

[0327] As an example, the first PUCCH enhancement resource includes a format of type formatExt.

[0328] As an example, the first PUCCH enhancement resource includes a PUCCH resource indicated by a PUCCH-Resource with one of the formats {format0, format1, format2, format3, format4}.

[0329] As an example, the first PUCCH enhancement resource includes only the PUCCH resources indicated by PUCCH-Resource other than those with the format {format0,format1,format2,format3,format4}.

[0330] As an example, the first PUCCH enhancement resource only includes PUCCH-Resource with format5.

[0331] As an example, the first PUCCH enhancement resource includes only PUCCH-Resource with format6 format.

[0332] As an example, the first PUCCH enhancement resource includes only PUCCH-Resource with formatPTM format.

[0333] As an example, the first PUCCH enhancement resource includes only PUCCH-Resources with the format formatMBS.

[0334] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-format5.

[0335] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-formatExt2.

[0336] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-format6.

[0337] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-formatPTM.

[0338] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-formatMBS.

[0339] As an example, the format of the first PUCCH enhancement resource is configured by PUCCH-formatExt2.

[0340] As an example, the pucch-formatConfig corresponding to the format of the first PUCCH enhancement resource includes configurations related to NACK-only.

[0341] As an example, the pucch-formatConfig corresponding to the format of the first PUCCH enhancement resource includes configurations related to the second type of HARQ feedback.

[0342] As an example, the first PUCCH enhancement resource is used only to transmit the second type of HARQ feedback signal.

[0343] As an example, the second type of HARQ feedback signal is HARQ-NACK feedback.

[0344] As an example, the second type of HARQ feedback signal is NACK-only feedback.

[0345] As an example, the second type of HARQ feedback signal cannot provide an ACK.

[0346] As an example, the second type of HARQ feedback signal can only provide NACK feedback.

[0347] As an example, the second type of HARQ feedback signal is a HARQ feedback signal other than the ACK / NACK type.

[0348] As an example, the expiration value of the target timer is configured by the serving cell of the first node.

[0349] As an example, the expiration of the target timer triggers the operation of a third timer that is currently running on the first node.

[0350] As an example, when the target timer expires, the third timer is in operation.

[0351] As an example, the PDCCH channel is monitored during the operation of the third timer.

[0352] As a sub-implementation of the above embodiments, the operation period of the third timer is the active time.

[0353] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the first signaling.

[0354] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the second signaling.

[0355] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the third signaling.

[0356] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit signaling for scheduling the retransmission of the first bit block.

[0357] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a blind detection PDCCH channel.

[0358] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a demodulation PDCCH channel.

[0359] As an example, the third timer in the running state of the behavioral operation includes at least one of {restart, maintain, modify expired value}.

[0360] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation is to restart the third timer, and the expiration value of the third timer remains unchanged.

[0361] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation is to restart the third timer, including stopping the third timer and then starting the third timer again.

[0362] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation is to maintain the third timer, and the third timer continues to run.

[0363] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation is to maintain the third timer, and the expected expiration time of the third timer remains unchanged.

[0364] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation is to maintain the third timer, and the running state of the third timer is not interfered with.

[0365] As a sub-example of the above embodiments, the third timer in the running state of the behavior operation modifies the expiration value of the third timer. After the expiration value of the third timer is modified, the expected expiration time of the third timer is later than the expected expiration time when the expiration value of the third timer is not modified.

[0366] As an example, the name of the third timer includes drx.

[0367] As an example, the name of the third timer includes PTM.

[0368] As an example, the name of the third timer includes RNTI.

[0369] As an example, the name of the third timer includes MBS.

[0370] As an example, the name of the third timer includes "type".

[0371] As an example, the name of the third timer includes retransmission.

[0372] As an example, the expiration value of the third timer is configured by the serving cell of the first node.

[0373] As an example, the expiration value of the third timer is configured by DRX-Config.

[0374] As an example, the first timer is configured by DRX-ConfigSecondaryGroup.

[0375] As an example, the third timer is configured by DRX-ConfigPTM.

[0376] As an example, the third timer is configured by DRX-ConfigMBS.

[0377] As an example, the third timer is drx-RetransmissionTimerDLPTM.

[0378] As an example, the third timer is drx-RetransmissionTimerPTM.

[0379] As one embodiment, the third timer is for the HARQ process identified by the first HARQ process number.

[0380] As an example, the advantage of the above method is that when different retransmissions occur, or when the UE receives both PTP and PTM retransmissions, the third timer may be triggered sequentially, and the third timer may be triggered again while it is running. This scenario does not exist in unicast transmission. If not handled properly, it will affect the reception of retransmitted data. The method proposed in this application is beneficial for receiving retransmitted data and avoids misunderstandings between the network and the UE.

[0381] As one embodiment, the first signaling includes a first field, which is used to indicate the timing between PDSCH and HARQ feedback; whether the first field includes a non-numeric type indication or a numeric type indication is used to determine the expiration value of the fourth timer;

[0382] The first node monitors the PDCCH channel during the operation of the fourth timer;

[0383] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the first signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the first signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0384] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0385] As a sub-implementation of the above embodiments, the name of the first field is PDSCH-to-HARQ_feedbacktiming indicator.

[0386] As a sub-implementation of the above embodiments, the first field occupies 1, 2, or 3 bits.

[0387] As a sub-implementation of the above embodiments, the value of the first field corresponds to one of the values ​​indicated by the higher layer: dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2.

[0388] As a sub-implementation of the above embodiments, if the current time slot is n, the first node transmits the corresponding HARQ feedback signal in n+k, where k is determined by the timing between the PDSCH indicated by the first field and the HARQ feedback, and the timing between the PDSCH indicated by the first field and the HARQ feedback is a numerical indication.

[0389] As a sub-implementation of the above embodiments, the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is value-1, which represents a non-numeric value.

[0390] As a sub-implementation of the above embodiments, the numerical indication is that the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is a value other than value-1.

[0391] As a sub-implementation of the above embodiments, the meaning of the phrase "the first field includes a non-numeric type indication" is that the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is value-1.

[0392] As a sub-implementation of the above embodiments, the meaning of the phrase "the first field includes an indication of the numeric type" is that the numeric value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is a value other than value-1, such as value-2 or value-3.

[0393] As a sub-implementation of the above embodiments, the non-numeric type indication is that the value in dl-DataToUL-ACK-r16 indicated by the first field is an unapplicable value.

[0394] As a sub-implementation of the above embodiments, the second RNTI is the second type of RNTI.

[0395] As a sub-implementation of the above embodiments, the first signaling indicates a downlink transmission.

[0396] As a sub-implementation of the above embodiments, the second timer is a timer related to HARQ.

[0397] As a sub-implementation of the above embodiments, the second timer is a timer related to PTM.

[0398] As a sub-implementation of the above embodiments, the second timer is a timer for the HARQ process identified by the first HARQ process number.

[0399] As a sub-implementation of the above embodiments, the fourth timer is a timer related to retransmission.

[0400] As a sub-implementation of the above embodiments, the fourth timer is a timer for the HARQ process identified by the first HARQ process number.

[0401] As a sub-example of the above embodiments, the fourth timer is a timer related to PTM.

[0402] As a sub-example of the above embodiments, the fourth timer is a timer related to MBS.

[0403] As a sub-example of the above embodiments, the fourth timer is for the second RNTI.

[0404] As a sub-example of the above embodiments, the third expiration value is different from the fourth expiration value.

[0405] As a sub-example of the above embodiments, the third expiration value is equal to the sum of the fourth expiration value and the expiration value of the second timer.

[0406] As a sub-example of the above embodiments, the third expiration value is determined by the fourth expiration value and the fourth offset.

[0407] As a sub-example of the above embodiments, the fourth expiration value is determined by the third expiration value and the third offset.

[0408] As a sub-example of the above embodiments, the third expiration value is longer than the fourth expiration value.

[0409] As a sub-implementation of the above embodiments, the operation period of the fourth timer is the active time.

[0410] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the first signaling.

[0411] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the second signaling.

[0412] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the third signaling.

[0413] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit signaling for scheduling the retransmission of the first bit block.

[0414] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a blind detection PDCCH channel.

[0415] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a demodulation PDCCH channel.

[0416] As an example, the advantages of the above method are as follows: when the first field indicates a non-numerical indication, the fourth timer will start immediately; when the first field indicates a numerical indication, the second timer needs to be started first and then the second timer triggers the fourth timer; if different terminals receive different indications, or some terminals do not receive the first signaling, the start time of the fourth timer of different terminals may be different. The method of this application is beneficial to achieving the same termination or expiration time when the start time of the fourth timer of different terminals is different, which is beneficial for the base station to uniformly use the PTM method for retransmission.

[0417] As one embodiment, the second signaling includes a first field, which is used to indicate the timing between PDSCH and HARQ feedback; whether the first field includes a non-numerical type indication or a numerical type indication is used to determine the expiration value of the fourth timer;

[0418] The first node monitors the PDCCH channel during the operation of the fourth timer;

[0419] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the second signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the second signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0420] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0421] As a sub-implementation of the above embodiments, the name of the first field is PDSCH-to-HARQ_feedbacktiming indicator.

[0422] As a sub-implementation of the above embodiments, the first field occupies 1, 2, or 3 bits.

[0423] As a sub-implementation of the above embodiments, the value of the first field corresponds to one of the values ​​indicated by the higher layer: dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2.

[0424] As a sub-implementation of the above embodiments, if the current time slot is n, the first node transmits the corresponding HARQ feedback signal in n+k, where k is determined by the timing between the PDSCH indicated by the first field and the HARQ feedback, and the timing between the PDSCH indicated by the first field and the HARQ feedback is a numerical indication.

[0425] As a sub-implementation of the above embodiments, the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is value-1, which represents a non-numeric value.

[0426] As a sub-implementation of the above embodiments, the numerical indication is that the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is a value other than value-1.

[0427] As a sub-implementation of the above embodiments, the meaning of the phrase "the first field includes a non-numeric type indication" is that the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is value-1.

[0428] As a sub-implementation of the above embodiments, the meaning of the phrase "the first field includes an indication of the numeric type" is that the numeric value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first field is a value other than value-1, such as value-2 or value-3.

[0429] As a sub-implementation of the above embodiments, the non-numeric type indication is that the value in dl-DataToUL-ACK-r16 indicated by the first field is an unapplicable value.

[0430] As a sub-implementation of the above embodiments, the second RNTI is the second type of RNTI.

[0431] As a sub-implementation of the above embodiments, the second signaling indicates a downlink transmission.

[0432] As a sub-implementation of the above embodiments, the second timer is a timer related to HARQ.

[0433] As a sub-implementation of the above embodiments, the second timer is a timer related to PTM.

[0434] As a sub-implementation of the above embodiments, the second timer is a timer for the HARQ process identified by the first HARQ process number.

[0435] As a sub-implementation of the above embodiments, the fourth timer is a timer related to retransmission.

[0436] As a sub-implementation of the above embodiments, the fourth timer is a timer for the HARQ process identified by the first HARQ process number.

[0437] As a sub-example of the above embodiments, the fourth timer is a timer related to PTM.

[0438] As a sub-example of the above embodiments, the fourth timer is a timer related to MBS.

[0439] As a sub-example of the above embodiments, the fourth timer is for the second RNTI.

[0440] As a sub-implementation of the above embodiments, the fourth timer is drx-RetransmissionTimerDLPTM.

[0441] As a sub-example of the above embodiments, the third expiration value is different from the fourth expiration value.

[0442] As a sub-example of the above embodiments, the third expiration value is equal to the sum of the fourth expiration value and the expiration value of the second timer.

[0443] As a sub-example of the above embodiments, the third expiration value is longer than the fourth expiration value.

[0444] As a sub-implementation of the above embodiments, the operation period of the fourth timer is the active time.

[0445] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the first signaling.

[0446] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the second signaling.

[0447] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the third signaling.

[0448] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit signaling for scheduling the retransmission of the first bit block.

[0449] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a blind detection PDCCH channel.

[0450] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a demodulation PDCCH channel.

[0451] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel is used to receive the second signaling.

[0452] As a sub-example of the above embodiments, the behavior involves monitoring the PDCCH channel before receiving the second signaling during the operation of the fourth timer.

[0453] As a sub-example of the above embodiments, the reception of the second signaling occurs during the operation of the fourth timer, while monitoring the PDCCH channel.

[0454] As an example, the advantages of the above method are as follows: when the first field indicates a non-numerical indication, the terminal will immediately start the fourth timer; when the first field indicates a numerical indication, the terminal needs to start the second timer first and then the second timer triggers the fourth timer; if different terminals receive different indications, it may cause the start time of the fourth timer of different terminals to be different. The method of this application is beneficial to keeping their end time or expiration time the same when the start time of the fourth timer of different terminals is different, which is beneficial for the base station to uniformly use the PTM method for retransmission.

[0455] As one example, the sixth timer is used for discontinuous reception.

[0456] As an example, the name of the sixth timer includes HARQ.

[0457] As an example, the name of the sixth timer does not include PTM.

[0458] As an example, the sixth timer is drx-HARQ-RTT-TimerDL.

[0459] As an example, the first node does not attempt to perform blind decoding of the PDCCH channel using the first RNTI during the operation of the sixth timer.

[0460] As an example, the first node does not attempt to perform blind decoding of the PDCCH channel using the first type of RNTI during the operation of the sixth timer.

[0461] As an example, the first node does not attempt to monitor the PDCCH channel using the first RNTI during the operation of the sixth timer.

[0462] As one example, the sixth timer is for a cell or a group of cells.

[0463] As one example, the expiration of the sixth timer triggers the start of the seventh timer.

[0464] As an example, in response to the expiration of the sixth timer, the first node starts the seventh timer.

[0465] As an example, the name of the seventh timer includes retransmission.

[0466] As an example, the name of the seventh timer does not include PTM.

[0467] As an example, the seventh timer is drx-RetransmissionTimerDL.

[0468] As an example, the active time includes the running time of the seventh timer.

[0469] As an example, the first node listens to the PDCCH channel during the operation of the seventh timer.

[0470] As a sub-example of this embodiment, the behavior monitoring of the PDCCH channel includes blind decoding of the PDCCH channel using the first RNTI.

[0471] As a sub-example of this embodiment, the behavior monitoring of the PDCCH channel does not include blind decoding of the PDCCH channel using the second RNTI.

[0472] As a sub-example of this embodiment, the first node does not use the second RNTI to monitor the PDCCH channel during the operation of the seventh timer and when the third timer is not running.

[0473] As a sub-example of this embodiment, the first node does not use the second RNTI to blindly decode the PDCCH channel during the operation of the seventh timer and when the third timer is not running.

[0474] As an example, the first node uses the second RNTI to listen to the PDCCH channel during the third timer operation and uses the first RNTI to listen to the PDCCH channel during the seventh timer operation.

[0475] As a sub-implementation of the above embodiments, the behavior of using the second RNTI to monitor the PDCCH channel includes using the second RNTI to perform blind decoding of the PDCCH channel.

[0476] As a sub-implementation of the above embodiments, the behavior of using the first RNTI to monitor the PDCCH channel includes using the first RNTI to perform blind decoding on the PDCCH channel.

[0477] As an example, the advantage of the above method is that the first node only uses a specific RNTI to perform blind decoding of the PDCCH when needed, which is beneficial for saving power. The less blind decoding, the more power is saved.

[0478] Example 2

[0479] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in the attached diagram. Figure 2 As shown. (Attached) Figure 2 This describes the V2X communication architecture under the 5G NR (New Radio), LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) system architectures. The 5G NR or LTE network architecture can also be referred to as 5GS (5G System) / EPS (Evolved Packet System) or some other suitable term.

[0480] The V2X communication architecture of Example 2 includes a UE (User Equipment) 201, a UE 241, an NG-RAN (Next Generation Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, a ProSe function 250, and a ProSe application server 230. This V2X communication architecture can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, the V2X communication architecture provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes an NR Node B (gNB) 203 and other gNBs 204. gNBs 203 provide user and control plane protocol termination toward the UE 201. gNBs 203 can connect to other gNBs 204 via an Xn interface (e.g., backhaul). gNB203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB203 provides UE201 with an access point to the 5GC / EPC210. ​​Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB203 is connected to 5GC / EPC210 via the S1 / NG interface.The 5GC / EPC210 includes the MME (Mobility Management Entity), AMF (Authentication Management Field), and SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, the S-GW (Service Gateway) / UPF (User Plane Function) 212, and the P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that handles signaling between the UE201 and the 5GC / EPC210. ​​Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 connects to Internet service 230. Internet service 230 includes carrier-compliant Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services. If near-field communication (ProSe) is involved, the network architecture may also include network elements related to near-field communication, such as ProSe function 250 and ProSe application server 230. ProSe function 250 is a logical function for network-related behaviors required for Proximity-based Services (ProSe); it includes DPF (Direct Provisioning Function), Direct Discovery Name Management Function, and EPC-level Discovery ProSe Function. ProSe application server 230 has functions such as storing EPC ProSe user identifiers, mapping between application layer user identifiers and EPC ProSe user identifiers, and allocating a pool of ProSe-restricted code suffixes.

[0481] As an example, the first node in this application is UE201.

[0482] As an example, the second node in this application is gNB203.

[0483] As an example, the radio link from UE201 to NR node B is an uplink.

[0484] As an example, the radio link from NR node B to UE201 is a downlink.

[0485] As an example, the UE201 supports relay transmission.

[0486] As an example, the UE201 supports multicast services.

[0487] As an example, the UE201 does not support relay transmission.

[0488] As an example, the UE201 supports multiple TRP transmissions.

[0489] As an example, the UE201 is a vehicle including a car.

[0490] As one example, gNB203 is a base station.

[0491] As an example, the gNB203 is a base station that supports multiple TRPs.

[0492] As an example, the gNB203 is a base station that supports broadcast multicast services.

[0493] As one example, the gNB203 is a flight platform device.

[0494] As an example, the gNB203 is a satellite device.

[0495] Example 3

[0496] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node (a satellite or aircraft in the gNB or NTN) and the second node (a satellite or aircraft in the gNB, UE, or NTN), or between two UEs, is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second nodes and between the two UEs via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between second nodes to the first node. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first nodes. MAC sublayer 302 is also responsible for HARQ operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first nodes. PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second nodes in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not illustrated, the first node may have several upper layers above the L2 layer 355. Additionally, it includes a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.).

[0497] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0498] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node in this application.

[0499] As an example, the first signaling in this application is generated in PHY301.

[0500] As an example, the second signaling in this application is generated in PHY301.

[0501] As an example, the third signaling in this application is generated in PHY301.

[0502] As an example, the first signal in this application is generated by MAC302 or PHY301.

[0503] As an example, the second signal in this application is generated by MAC302 or PHY301.

[0504] As an example, the third signal in this application is generated in MAC302 or PHY301.

[0505] As an example, the first feedback signal in this application is generated in PHY301.

[0506] As an example, the second feedback signal in this application is generated in PHY301.

[0507] As an example, the first MAC CE in this application is generated in MAC302.

[0508] As an example, the first message in this application is generated in RRC306 or MAC302.

[0509] Example 4

[0510] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0511] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0512] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0513] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0514] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0515] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0516] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0517] As one embodiment, the first communication device 450 includes: receiving a first signaling, wherein a second RNTI is used to generate a scrambling code for the first signaling, the first signaling being used to indicate a first time-frequency resource; receiving a first signal on the first time-frequency resource; a first bit block being used to generate the first signal; the first signaling indicating a new transmission; the first signaling indicating that the HARQ process number of the first signal is a first HARQ process number; the second RNTI being used to generate a scrambling code for the first signal; receiving a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, the second signaling being used to indicate a second time-frequency resource; receiving a second signal on the second time-frequency resource; the first bit block being used to generate the second signal; the second signaling indicating a retransmission; the second signaling indicating that the HARQ process number of the second signal is the first HARQ process number; the first RNTI being used to generate a scrambling code for the second signal; transmitting a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; and transmitting the signal as a means of transmission. The response to the second feedback signal begins with a target timer for the HARQ process identified by the first HARQ process number; wherein, the first RNTI is a first type RNTI; the second RNTI is one of the first type RNTI and the second type RNTI; the first type RNTI and the second type RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI; the meaning of the sentence "whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI" is: when the second RNTI is the second type RNTI, the target timer is the second timer; when the second RNTI is the first type RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type RNTI.

[0518] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first signaling, wherein a second RNTI is used to generate a scrambling code for the first signaling, the first signaling being used to indicate a first time-frequency resource; receiving a first signal on the first time-frequency resource; a first bit block being used to generate the first signal; the first signaling indicating a new transmission; the first signaling indicating that the HARQ process number of the first signal is a first HARQ process number; and the second RNTI being used to generate a scrambling code for the first signal.

[0519] Receive second signaling, the first RNTI is used to generate scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; receive a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate scrambling code for the second signal; transmit a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; in response to transmitting the second feedback signal, start a target timer for the HARQ process identified by the first HARQ process number; wherein, the first RNTI is a first type RNTI; the second RNTI is a first type RNTI and a second type RNT. One of the two; the first type RNTI and the second type RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI; the meaning of the sentence "whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI" is: when the second RNTI is the second type RNTI, the target timer is the second timer; when the second RNTI is the first type RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type RNTI.

[0520] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 includes at least: transmitting a first signaling, wherein a second RNTI is used to generate a scrambling code for the first signaling, the first signaling being used to indicate a first time-frequency resource; transmitting a first signal on the first time-frequency resource; a first bit block being used to generate the first signal; the first signaling indicating a new transmission; the first signaling indicating that the HARQ process number of the first signal is a first HARQ process number; the second RNTI being used to generate a scrambling code for the first signal; transmitting a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, the second signaling being used to indicate a second time-frequency resource; transmitting a second signal on the second time-frequency resource; the first bit block being used to generate the second signal; the second signaling indicating a retransmission; the second signaling indicating that the HARQ process number of the second signal is the first HARQ process number; the first RNTI being used to generate a scrambling code for the second signal; receiving a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; the transmission of the second feedback signal being used to start a target timer for the HARQ process identified by the first HARQ process number;

[0521] Wherein, the first RNTI is a first type RNTI; the second RNTI is one of the first type RNTI and the second type RNTI; the first type RNTI and the second type RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI; the meaning of the sentence "whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type RNTI or the second type RNTI" is: when the second RNTI is the second type RNTI, the target timer is the second timer; when the second RNTI is the first type RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell; the second timer is related to non-unicast transmission and the second timer is for the second type RNTI.

[0522] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: transmitting a first signaling, wherein a second RNTI is used to generate a scrambling code for the first signaling, the first signaling being used to indicate a first time-frequency resource; transmitting a first signal on the first time-frequency resource; a first bit block being used to generate the first signal; the first signaling indicating a new transmission; the first signaling indicating that the HARQ process number of the first signal is a first HARQ process number; and the second RNTI being used to generate a scrambling code for the first signal.

[0523] Sending a second signaling instruction, the first RNTI is used to generate the scrambling code for the second signaling instruction, the second signaling instruction is used to indicate a second time-frequency resource; transmitting a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling instruction is used to indicate a retransmission; the second signaling instruction indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate the scrambling code for the second signal; receiving a second feedback signal on a first PUCCH resource, the first PUCCH resource is used to transmit a first type of HARQ feedback signal; the transmission of the second feedback signal is used to start a target timer for the HARQ process identified by the first HARQ process number; wherein, the first RNTI is a first type RNTI; the second RNTI is a first type RNTI and a second type RNTI. One of two NTIs; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI; the meaning of the sentence "whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI" is: when the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0524] As an example, the first communication device 450 corresponds to the first node in this application.

[0525] As an example, the second communication device 410 corresponds to the second node in this application.

[0526] As an example, the first communication device 450 is a UE.

[0527] As an example, the first communication device 450 is a vehicle-mounted terminal.

[0528] As an example, the first communication device 450 is a relay.

[0529] As one embodiment, the second communication device 410 is a base station.

[0530] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the first message.

[0531] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the first MAC CE.

[0532] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the first signaling.

[0533] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the second signaling.

[0534] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the third signaling.

[0535] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the first signal.

[0536] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the second signal.

[0537] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the third signal.

[0538] As one embodiment, a transmitter 456 (including an antenna 460), a transmitter processor 455, and a controller / processor 490 are used in this application to transmit the first feedback signal.

[0539] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 455 and controller / processor 490 are used in this application to transmit the second feedback signal.

[0540] As one embodiment, a transmitter 416 (including an antenna 420), a transmitter processor 412, and a controller / processor 440 are used in this application to transmit the first message.

[0541] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 412 and controller / processor 440 are used to transmit the first MAC CE in this application.

[0542] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 412 and controller / processor 440 are used in this application to transmit the first signaling.

[0543] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 412 and controller / processor 440 are used to transmit the second signaling in this application.

[0544] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 412 and controller / processor 440 are used to transmit the third signaling in this application.

[0545] As one embodiment, a transmitter 416 (including an antenna 420), a transmitter processor 412, and a controller / processor 440 are used in this application to transmit the first signal.

[0546] As one embodiment, a transmitter 416 (including an antenna 420), a transmitter processor 412, and a controller / processor 440 are used in this application to transmit the first signal.

[0547] As one embodiment, a transmitter 416 (including an antenna 420), a transmitter processor 412, and a controller / processor 440 are used in this application to transmit the first signal.

[0548] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used in this application to receive the first feedback signal.

[0549] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used in this application to receive the second feedback signal.

[0550] Example 5

[0551] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5 In this example, U01 corresponds to the first node of this application, and N02 corresponds to the second node of this application. It should be noted that the order in this example does not limit the signal transmission order and the implementation order in this application, and the steps in F51, F52 and F53 are optional.

[0552] for First node U01 In step S5101, a first message is received; in step S5102, a first signaling is received; in step S5103, a first signal is received; in step S5104, a first feedback signal is sent; in step S5105, a second signaling is received; in step S5106, a second signal is received; in step S5107, a second feedback signal is sent; in step S5108, a third signaling is received; in step S5109, a third signal is received; and in step S5110, a first MAC CE is received.

[0553] for Second node N02 In step S5201, a first message is sent; in step S5202, a first signaling is sent; in step S5203, a first signal is sent; in step S5204, a first feedback signal is received; in step S5205, a second signaling is sent; in step S5206, a second signal is sent; in step S5207, a second feedback signal is received; in step S5208, a third signaling is sent; in step S5209, a third signal is sent; and in step S5210, a first MAC CE is sent.

[0554] In embodiment 5, the second RNTI is used to generate the scrambling code of the first signaling, the first signaling is used to indicate the first time-frequency resource; a first signal is received on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is the first HARQ process number; the second RNTI is used to generate the scrambling code of the first signal.

[0555] The first RNTI is used to generate the scrambling code for the second signaling, which is used to indicate the second time-frequency resource; a second signal is received on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate the scrambling code for the second signal.

[0556] The first node U01 sends a second feedback signal on the first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; in response to sending the second feedback signal, it starts a target timer for the HARQ process identified by the first HARQ process number.

[0557] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0558] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0559] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0560] In one embodiment, the second node N02 is the serving cell of the first node U01.

[0561] In one embodiment, the second node N02 is the primary cell (PCell) of the first node U01.

[0562] As an example, the second node N02 is a special cell (SpCell) of the first node U01.

[0563] As an example, the second node N02 is the PSCell of the first node U01.

[0564] In one embodiment, the second node N02 is a base station.

[0565] As an example, the second node N02 is a DU (data unit).

[0566] As one example, the first message includes RRCReconfiguration.

[0567] As one embodiment, the first message includes the first expiration value and the second expiration value.

[0568] As an example, the first expiration value and the second expiration value are different.

[0569] As one embodiment, the first message includes the first expiration value and the first offset, and the first expiration value and the first offset together determine the second expiration value.

[0570] As one embodiment, the first message includes the second expiration value and the second offset, and the second expiration value and the second offset together determine the first expiration value.

[0571] As an example, the first signaling is sent in PTM mode.

[0572] As an example, the first signal is transmitted in a PTM manner.

[0573] As an example, the second signaling is sent in PTP mode.

[0574] As an example, the second signal is transmitted in PTP mode.

[0575] As an example, the third signaling is sent in PTM mode.

[0576] As an example, the third signal is transmitted in a PTM manner.

[0577] As an example, the first feedback signal is HARQ feedback.

[0578] As an example, the first feedback signal is a HARQ feedback signal of the first type.

[0579] As an example, the first feedback signal is a HARQ feedback signal of the second type.

[0580] As an example, the first feedback signal is the HARQ feedback signal of the first signal.

[0581] As an example, the first signal occupies the PDSCH channel.

[0582] As an example, the second signal occupies the PDSCH channel.

[0583] As an example, the third signal occupies the PDSCH channel.

[0584] As an example, the first node U01 determines whether the first feedback signal is HARQ ACK or HARQ NACK based on whether the first bit block is correctly decoded.

[0585] As a sub-example of this embodiment, the first bit block was not correctly decoded.

[0586] As an example, the first node U01 determines whether to send the first feedback signal based on whether the first bit block has not been correctly decoded.

[0587] As a sub-example of this embodiment, the first bit block was not correctly decoded.

[0588] As a sub-implementation of this embodiment, the first feedback signal is a HARQ feedback signal of the second type.

[0589] As an example, the first node U01 determines whether the first feedback signal is HARQ ACK or HARQ NACK based on whether the first signal is correctly decoded.

[0590] As a sub-example of this embodiment, the first signal was not correctly decoded.

[0591] As an example, the first node U01 determines whether to send the first feedback signal based on whether the first signal has not been correctly decoded.

[0592] As a sub-example of this embodiment, the first signal was not correctly decoded.

[0593] As a sub-implementation of this embodiment, the first feedback signal is a HARQ feedback signal of the second type.

[0594] As an example, the first PUCCH resource is orthogonal to the first PUCCH enhancement resource.

[0595] As an example, the transmission of the first feedback signal triggers the start of the second timer for the HARQ process identified by the first HARQ process number.

[0596] As a sub-implementation of this embodiment, the second timer can be triggered and run multiple times. The first feedback signal triggers one run of the second timer; the second feedback signal can also trigger one run of the second timer.

[0597] As an example, the first field of the first signaling indicates how many time slots later the first feedback signal was transmitted than the first signal.

[0598] As a sub-implementation of this embodiment, the first field of the first signaling is the PDSCH-to-HARQ_feedback timing indicator.

[0599] As one embodiment, the first node U01 receives a first message, which is used to indicate a first expiration value and a second expiration value;

[0600] The first node U01 sends a first feedback signal, and in response to sending the first feedback signal, starts the second timer for the HARQ process identified by the first HARQ process number; the sending of the first feedback signal is later than the receiving of the first signal.

[0601] Wherein, the second RNTI is the second type of RNTI; the first feedback signal occupies one of the first PUCCH resource or the first PUCCH enhancement resource; whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal;

[0602] The meaning of the sentence "Whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is:

[0603] When the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0604] As a sub-implementation of this embodiment, whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource is used to determine whether the expiration value of the second timer is the first expiration value or the second expiration value.

[0605] As a sub-implementation of this embodiment, when the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0606] As a sub-implementation of this embodiment, it is assumed that the expiration value of the second timer is the first expiration value, and the expected expiration time of the second timer is the first expiration time; it is also assumed that the expiration value of the second timer is the second expiration value, and the expected expiration time of the second timer is the second expiration time.

[0607] As a sub-implementation of this embodiment, the absolute value of the difference between the first expiration time and the second expiration time is less than or equal to the first expiration threshold.

[0608] As a sub-implementation of this embodiment, the first threshold is one of {frame, subframe, time slot, symbol, 10 milliseconds}.

[0609] As a sub-implementation of this embodiment, the first expiration time is equal to the second expiration time.

[0610] As an example, the advantages of the above method are as follows: the first node U01 can be configured with at least one of the first PUCCH resource and the second PUCCH enhancement resource. Even if the first node U01 feeds back the first feedback signal at different times on different resources, it can ensure that the expiration time of the second timer is similar or the same. This is beneficial for aligning the DRX timers related to retransmission of different terminals, facilitating retransmission in PTM mode, and saving resources and power. In addition, the network can use DCI or MAC CE to control HARQ feedback resources and / or HARQ feedback, or control the transmission mode of PTP or PTM through DCI or MAC CE without using RRC signaling to configure different expiration values ​​of the second timer, thereby reducing signaling overhead and latency.

[0611] As one embodiment, the first node U01 sends a first feedback signal, and in response to sending the first feedback signal, starts the second timer for the HARQ process identified by the first HARQ process number; the sending of the first feedback signal is later than the receiving of the first signal.

[0612] The first signaling includes a first field, which indicates whether the timing between the PDSCH and the HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal.

[0613] The meaning of the sentence "Whether the first field indicates the timing between PDSCH and HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is: when the first feedback signal occupies the first PUCCH resource, the first field indicates the timing between PDSCH and HARQ feedback; when the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback.

[0614] As a sub-implementation of this embodiment, the first field of the first signaling is the PDSCH-to-HARQ_feedback timing indicator.

[0615] As a sub-implementation of this embodiment, whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource is used to determine whether the first field indicates the timing between PDSCH and HARQ feedback.

[0616] As a sub-implementation of this embodiment, when the first feedback signal occupies the first PUCCH resource, the meaning of the first field indicating the timing between PDSCH and HARQ feedback includes: the transmission timing of the first feedback signal is determined according to the indication of the first field of the first signaling.

[0617] As a sub-implementation of this embodiment, when the first feedback signal occupies the first PUCCH resource, the meaning of the first field indicating the timing between PDSCH and HARQ feedback includes: the transmission timing of the first feedback signal is n+k, where n is the time slot for receiving the first signal, and the first field of the first signaling is used to indicate k.

[0618] As a sub-implementation of this embodiment, when the first feedback signal occupies the first PUCCH resource, the meaning of the first field indicating the timing between PDSCH and HARQ feedback includes: the transmission timing of the first feedback signal is n+k, wherein the first signal ends in time slot n, and the value in dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 indicated by the first signaling is k.

[0619] As a sub-implementation of this embodiment, when the first feedback signal occupies the first PUCCH resource, the meaning of the first field indicating the timing between PDSCH and HARQ feedback includes: when the timing between PDSCH and HARQ feedback indicated by the first field of the first signaling is a non-numerical indication, the first feedback signal is sent after receiving the next DCI.

[0620] As a sub-implementation of this embodiment, the value of the first field of the first signaling is mapped to the value of dl-DataToUL-ACK.

[0621] As a sub-implementation of this embodiment, the value of the first field of the first signaling is mapped to the value of dl-DataToUL-ACK-r16.

[0622] As a sub-implementation of this embodiment, the value of the first field of the first signaling is mapped to the value of dl-DataToUL-ACKForDCIFormat1_2.

[0623] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the transmission timing of the first feedback signal is independent of the value of the first field of the first signaling.

[0624] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the first field of the first signaling is not used to determine the transmission timing of the first feedback signal.

[0625] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the transmission timing of the first feedback signal is fixed.

[0626] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the transmission timing of the first feedback signal is the earliest available resource for transmitting the second type of HARQ feedback.

[0627] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the transmission timing of the first feedback signal is the earliest available PUCCH enhancement resource for transmitting the second type of HARQ feedback.

[0628] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the first field of the first signaling is ignored.

[0629] As a sub-implementation of this embodiment, the meaning of the sentence "When the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback" includes: the first field of the first signaling is used to indicate information other than the timing between PDSCH and HARQ feedback.

[0630] As an example, the advantage of the above method is that when some terminals send HARQ feedback signals on the first PUCCH enhancement resource and some terminals send HARQ feedback signals on the first PUCCH resource, the first field of the first signaling can only be applied to the case where HARQ feedback signals are sent on the first PUCCH resource. This maintains the flexibility of different terminals in the timing of HARQ feedback transmission and ensures that the execution of the second type of HARQ feedback signal is not affected.

[0631] As an example, the advantage of the above method is that the base station can control the transmission of the first type of HARQ feedback signal if it is to be sent in the first HARQ feedback of a new transmission, or in the first few HARQ feedbacks of a new transmission and retransmission. This helps to reduce the consumption of uplink PUCCH resources and reduce interference.

[0632] As an example, the first node U01 receives the third signaling, the second RNTI is used to generate the scrambling code for the third signaling, and the third signaling is used to indicate a third time-frequency resource; a third signal is received on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; the third signaling is received after the first signaling.

[0633] The first node U01 starts a third timer. At least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer. During the one run of the third timer, the PDCCH channel is monitored as a response to the third signal not being correctly decoded.

[0634] The third timer is used for discontinuous reception; the second RNTI is the second type of RNTI.

[0635] As a sub-implementation of this embodiment, the first signaling triggers the start of the third timer.

[0636] As a sub-example of this embodiment, the first signal triggers the start of the third timer.

[0637] As a sub-implementation of this embodiment, the first signaling triggers one run of the second timer, and the expiration of the one run of the second timer triggers the start of the third timer.

[0638] As a sub-example of this embodiment, the first signal triggers one run of the second timer, and the expiration of the first run of the second timer triggers the start of the third timer.

[0639] As a sub-example of this embodiment, the third timer is related to receiving retransmissions.

[0640] As a sub-example of this embodiment, the name of the third timer includes PTM.

[0641] As a sub-example of this embodiment, the name of the third timer includes retransmission.

[0642] As a sub-example of this embodiment, the third timer is drx-RetransmissionTimerDLPTM.

[0643] As a sub-implementation of this embodiment, the third timer is for the HARQ process identified by the first HARQ process number.

[0644] As a sub-example of this embodiment, the period of one run of the third timer is the active time.

[0645] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the first signaling.

[0646] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the second signaling.

[0647] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit the third signaling.

[0648] As a sub-implementation of the above embodiments, the PDCCH channel is used to transmit signaling for scheduling the retransmission of the first bit block.

[0649] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a blind detection PDCCH channel.

[0650] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a demodulation PDCCH channel.

[0651] As a sub-example of the above embodiments, the third signal was not correctly decoded.

[0652] As a sub-implementation of the above embodiments, the phrase "the third signal is not correctly decoded" includes: the first bit block included in the third signal is not correctly decoded.

[0653] As a sub-implementation of the above embodiments, the phrase "the third signal was not correctly decoded" includes: the third signal was not independently and correctly decoded.

[0654] As a sub-implementation of the above embodiments, the phrase "the third signal was not correctly decoded" includes: the decoding performed after the third signal was combined with the second signal was unsuccessful.

[0655] As a sub-implementation of the above embodiments, the phrase "the third signal was not correctly decoded" includes: the decoding of the third signal after it was combined with the first signal was unsuccessful.

[0656] As a sub-implementation of the above embodiments, the third signaling triggers the start of the third timer.

[0657] As a sub-implementation of the above embodiments, the third signaling triggers the start of the first timer, the expiration of the first timer triggers the third timer, and the start of the first timer and the start of the target timer when the first timer is the start of the first timer are two separate runs.

[0658] As a sub-implementation of the above embodiments, the third signaling triggers the start of the second timer, the expiration of the second timer triggers the third timer, and the start of the second timer and the start of the target timer when the second timer is the second timer are two separate runs.

[0659] As an example, the expiration of the target timer triggers the start of the third timer.

[0660] As an example, the expiration of the target timer triggers the start of a third timer, during which the first node monitors the PDCCH channel.

[0661] As a sub-example of this embodiment, the behavior monitoring PDCCH channel includes attempting to blindly decode the PDCCH channel using the first RNTI, without attempting to blindly decode the PDCCH channel using the second RNTI.

[0662] As a sub-example of this embodiment, the behavior monitoring PDCCH channel includes attempting to blindly decode the PDCCH channel using the second RNTI, and not attempting to blindly decode the PDCCH channel using the first RNTI.

[0663] As a sub-example of this embodiment, the behavior monitoring PDCCH channel includes attempting to blindly decode the PDCCH channel using the first RNTI and also attempting to blindly decode the PDCCH channel using the second RNTI.

[0664] As a sub-example of this embodiment, the name of the third timer includes retransmission.

[0665] As a sub-example of this embodiment, the third timer is used for discontinuous reception.

[0666] As a sub-example of this embodiment, the active time includes the running period of the third timer.

[0667] As one embodiment, the third signaling includes physical layer signaling.

[0668] As one example, the third signaling includes DCI (Downlink Control Information).

[0669] As a sub-implementation of this embodiment, the third signaling includes a DCI format for scheduling the PDSCH channel.

[0670] As a sub-implementation of this embodiment, the third signaling includes DCI format 1_0 and format 1_1.

[0671] As an example, the physical channel occupied by the third signaling is the PDCCH channel.

[0672] As an example, the second RNTI is used to scramble the CRC (Cyclic Redundancy Check) bits attached to the third signaling.

[0673] As a sub-implementation of this embodiment, the second RNTI is used for scrambling 16 bits of the additional CRC (Cyclic Redundancy Check) of the third signaling.

[0674] As a sub-implementation of this embodiment, the second RNTI is used to scramble the 16 least significant bits of the additional CRC (Cyclic Redundancy Check) of the third signaling.

[0675] As a sub-example of this embodiment, the second RNTI is used to scramble the CRC bits appended to the third signaling before channel coding.

[0676] As a sub-example of this embodiment, the third signaling is processed as a string of bits by the baseband, and the behavior being processed by the baseband includes additional CRC bits.

[0677] As a sub-example of this embodiment, the 16 bits of the second RNTI are scrambling bits of the additional CRC bits of the third signaling.

[0678] As one embodiment, the third time-frequency resource includes time resources and / or frequency resources.

[0679] As one example, the third time-frequency resource includes one or more PRBs (physical resource blocks).

[0680] As one embodiment, the third time-frequency resource includes one or more consecutive resource elements.

[0681] As one embodiment, the third time-frequency resource includes one or more discontinuous resource elements.

[0682] As an example, the third signal is transmitted on the third time-frequency resource.

[0683] As an example, the third signal occupies the third time-frequency resource.

[0684] As an example, receiving a third signal on the third time-frequency resource includes steps such as demodulation, descrambling, and decoding.

[0685] As one example, the third signal includes the PDSCH channel.

[0686] As one embodiment, the third signal includes an encoded block or a transport block.

[0687] As one embodiment, the third signal includes bit outputs corresponding to different redundant versions of the coded block.

[0688] As an example, the first bit block is one of a coding block, a transport block, or a group of coding blocks.

[0689] As an example, the first bit block is the bit after channel coding.

[0690] As one embodiment, the phrase first bit block used to generate the third signal includes modulation, performing OFDM-related transmission processing, and transmitting it on a specific antenna port.

[0691] As one embodiment, the phrase first bit block used to generate the third signal includes mapping onto different OFDM subcarriers.

[0692] As an example, the phrase first bit block used to generate the third signal includes at least one of rate matching, setting transmit power, and performing precoding related to multiple antennas.

[0693] As one embodiment, the phrase first bit block is used to generate the third signal by selecting the bit output corresponding to the redundancy version n, or by performing rate matching based on the redundancy version n.

[0694] As a sub-example of this embodiment, n equals one of {0,1,2,3}.

[0695] As a sub-example of this embodiment, n equals 0.

[0696] As an example, the value of the NDI field included in the third signaling is not flipped compared to the value of the NDI field included in the DCI corresponding to the previous received transmission of the first bit block.

[0697] As an example, the second RNTI is used to generate the scrambling code for the third signal.

[0698] As an example, the third signaling indicates a retransmission.

[0699] As an example, the third signaling includes a HARQ process number field, which indicates the first HARQ process number.

[0700] As an example, the second RNTI is used to generate a scrambling code for the third signal, which is scrambled by the scrambling code before modulation.

[0701] As an example, the second RNTI is used as the initial parameter for generating the scrambling code of the third signal.

[0702] As a sub-example of this embodiment, the initial parameters of the scrambling code of the third signal are obtained according to a general formula:

[0703] c init =n RNTI ·2 15 +q·2 14 +n ID

[0704] Where, n ID ∈{0,1,...,1023} is indicated by a higher level; q is the codeword number, with a value range such as {0,1}; n RNTI If set as the second RNTI, then the output c init The initial parameters are the scrambling codes of the third signal.

[0705] As a sub-example of this embodiment, the initial parameter of the scrambling code of the third signal is one of the initial parameters of a pseudo-random sequence, and the output of the pseudo-random sequence is the scrambling code of the third signal.

[0706] As an example, the advantages of the above method include: when retransmitting via PTP and then retransmitting via PTM, since the PTP transmissions of different terminals do not necessarily need to be synchronized in time, the DRX windows used for retransmission of different terminals may also be inconsistent, making it difficult to align the subsequent retransmission windows. As a result, if PTM retransmission is needed later, it is difficult to be exactly within the retransmission windows of all terminals, leading to reduced resource efficiency. The method proposed in this application can avoid this problem. When PTM transmission is performed later, the retransmission windows can always be aligned, thereby improving resource utilization and saving more power.

[0707] As an example, in this application, "monitoring the PDCCH channel" and "listening to the PDCCH channel" are the same.

[0708] Example 6

[0709] Example 6 illustrates a schematic diagram of time-frequency resources according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown.

[0710] As an example, Appendix Figure 6 The time-frequency resources in the above are applicable to the first time-frequency resources of this application.

[0711] As an example, Appendix Figure 6 The time-frequency resources in the second time-frequency resource of this application are applicable.

[0712] As an example, Appendix Figure 6 The time-frequency resources in the above are applicable to the third time-frequency resources described in this application.

[0713] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include time resources and frequency resources.

[0714] As an example, Appendix Figure 6 The time-frequency resources mentioned therein are continuous in time.

[0715] As an example, Appendix Figure 6 The time-frequency resources mentioned above are discontinuous in time.

[0716] As an example, Appendix Figure 6 The time-frequency resources mentioned therein are continuous in frequency.

[0717] As an example, Appendix Figure 6 The time-frequency resources mentioned therein are discontinuous in frequency.

[0718] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more OFDM symbols in the time domain.

[0719] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more time slots in the time domain.

[0720] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more subframes in the time domain.

[0721] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more subcarriers in the frequency domain.

[0722] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more sub-bands in the frequency domain.

[0723] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include one or more resource blocks.

[0724] As an example, Appendix Figure 6The time-frequency resources mentioned herein include one or more physical resource blocks.

[0725] As an example, Appendix Figure 6 The time-frequency resources mentioned herein include a fraction of physical resource blocks, such as half a physical resource block.

[0726] As an example, Appendix Figure 6 The time-frequency resources mentioned herein may or may not use frequency hopping.

[0727] Example 7

[0728] Example 7 illustrates a schematic diagram of a protocol stack according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0729] In Example 7, the multicast service includes MBS; the multicast service can be sent through a multicast PDU session. When sent through a multicast PDU session, a multicast bearer MRB can be used, and a PTM transmission method can be used; when the multicast service is transmitted through a unicast PDU session, only a unicast bearer DRB can be used.

[0730] The protocol stack shown in Example 7 is the protocol stack on the base station side, which has a certain correspondence with the protocol stack on the UE side.

[0731] Example 7 is based on Example 3.

[0732] As an example, multicast services are sent to the RAN's SDAP layer in the form of QoS Flow.

[0733] As an example, the QoS flow handling function of the SDAP layer is used to process the received QoS flow, such as mapping different QoS flows to different radio bearers, such as encapsulating them in SDAP data packets. The data processed by the SDAP layer is an SDAP PDU, which is sent to the PDCP layer through the interface between the SDAP layer and the PDCP layer, namely the Radio Bearer.

[0734] As an example, Appendix Figure 7 MRB1, MRB2, and MRB3 in the text all refer to MRBs, which are multicast radio bearers; Appendix Figure 7 The DRB (data RB) in the DRB is mainly used for the transmission of unicast services.

[0735] As an example, in the PDCP layer, each radio bearer has a corresponding PDCP entity. The ROHC function of the PDCP layer is responsible for header compression, and the Security function is responsible for security. The PDCP layer may also include other functions not shown, such as the PDCP entity related to the MRB, which can also provide security functions. The data processed by the PDCP layer is sent to the RLC layer as a PDCP PDU through the interface between the PDCP layer and the RLC layer, namely the RLC Channel.

[0736] As an example, a PDCP PDU of an MRB, such as MRB2, can be further processed and transmitted through multiple RLC entities, and thus sent to the MAC layer through different logical channels; this includes RLC entities associated with the MTCH channel, such as MTCH2, whose data can be transmitted via PTM, and RLC entities associated with the DTCH, whose data can only be transmitted via PTP; in the appendix Figure 7 In this system, there can be n DTCH channels targeting n UEs, and a DTCH channel targeting a specific UE can be multiplexed with other DTCH channels targeting the same UE.

[0737] As an example, MTCH1 and MTCH2 are both MTCH channels related to multicast, and each corresponds to a different RLC entity.

[0738] As an example, the Segm. of the RLC layer is used to handle segmentation; the Segm.ARQ function is used to handle segmentation and Automatic Repeat-reQuest function. RLC entities that support ARQ use AM mode, while RLC entities that do not support or do not use ARQ use UM mode.

[0739] As an example, the RLC layer may also support other functions not shown.

[0740] As an example, the data output by the RLC layer, namely the RLC PDU, is sent to the MAC layer through the interface between the RLC and the MAC layer, namely the logical channel, such as MTCH1, MTCH2, DTCH.

[0741] As an example, the MAC layer's Scheduling / Priority Handling function is used to implement scheduling and priority handling; Multiplexing is used for reuse, Multiplexing UEn refers to the reuse of UEn's data; the HARQ module is used for Hybrid Automatic Repeat reQuest; multiple logical channels of the same UE, such as UEn, can be multiplexed in the same MAC PDU.

[0742] As an example, the data processed by the MAC layer, the MAC PDU, is sent to the physical layer through the interface between the MAC layer and the physical layer, namely the Transport Channel, such as DL-SCH.

[0743] As an example, the transport channels associated with multicast services include DL-SCH, such as DL-SCH1, DL-SCH2, DL-SCH3, ..., DL-SCHn, which are all DL-SCH channels.

[0744] As an example, the data received by the physical layer from the MAC layer is processed as transport blocks.

[0745] As an example, the first bit block is generated at the MAC layer.

[0746] As an example, the first bit block is generated at the physical layer.

[0747] As an example, Appendix Figure 7 Data in DL-SCH3 and DL-SCHn are transmitted only via PTP.

[0748] As an example, Appendix Figure 7 The data of DL-SCH1 and DL-SCH2 are transmitted via PTM.

[0749] As an example, Appendix Figure 7 Data in DL-SCH2 is transmitted via PTP.

[0750] As an example, Appendix Figure 7 Data in DL-SCH2 is retransmitted via PTP.

[0751] As an example, Appendix Figure 7 The data in DL-SCH2 is scheduled by the PDCCH channel scrambled by the first type RNTI.

[0752] As an example, Appendix Figure 7The data in DL-SCH2 is scheduled by the PDCCH channel scrambled by type 2 RNTI.

[0753] As an example, Appendix Figure 7 The data in DL-SCH2 is transmitted through a PDSCH channel scrambled by Type I RNTI.

[0754] As an example, Appendix Figure 7 The data in DL-SCH2 is transmitted through a PDSCH channel scrambled by type 2 RNTI.

[0755] As an example, Appendix Figure 7 The data in DL-SCH2 is the first bit block.

[0756] As an example, the data carried by the first bit block is generated in the RLC entity associated with MTCH2.

[0757] As an example, the MBS service data carried by the first bit block is generated in the RLC entity associated with MTCH2.

[0758] As one embodiment, the second signaling is used to indicate whether the data carried by the second signal is MTCH data or DTCH data.

[0759] As a sub-implementation of this embodiment, the first signaling explicitly indicates whether the data carried by the second signal is MTCH data or DTCH data.

[0760] As a sub-implementation of this embodiment, the search space to which the second signaling belongs is used to determine whether the data carried by the second signal is MTCH data or DTCH data.

[0761] As a sub-implementation of this embodiment, the CORESET to which the second signaling belongs is used to determine whether the data carried by the second signal is MTCH data or DTCH data.

[0762] As a sub-implementation of this embodiment, the search space to which the second signaling belongs refers to the search space to which the first node detects or receives the second signaling.

[0763] As a sub-implementation of this embodiment, the CORESET to which the second signaling belongs refers to the first node receiving the second signaling within the CORESET to which the second signaling belongs.

[0764] As a sub-example of this embodiment, the data in the MTCH refers to the retransmitted MBS data.

[0765] As a sub-implementation of this embodiment, the data in the MTCH refers to retransmitted multicast data.

[0766] As a sub-example of this embodiment, the data in the DTCH refers to unicast data.

[0767] As a sub-example of this embodiment, the data in the MTCH refers to the data generated in the PTM RLC entity or the multicast RLC entity.

[0768] As a sub-example of this embodiment, the DTCH data refers to data generated in a PTP RLC entity or a unicast RLC entity.

[0769] Example 8

[0770] Example 8 illustrates a schematic diagram of the transmission of a first bit block according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown.

[0771] In Example 8, gNB corresponds to the second node of this application, UE1 corresponds to the first node of this application, and UE2 is another UE that receives the same service as UE1.

[0772] As an example, Appendix Figure 8 The first transmission of the first bit block in the signal corresponds to the new transmission indicated by the first signaling.

[0773] As an example, Appendix Figure 8 The first transmission of the first bit block in the process is a new transmission.

[0774] As an example, Appendix Figure 8 The first transmission of the first bit block in the sequence is sent via PTM.

[0775] As an example, Appendix Figure 8 The first transmission of the first bit block in the signal is sent via the first signal.

[0776] As an example, the UE1 sends HARQ feedback for the first transmission of the first bit block based on the decoding result of the received first bit block or first signal.

[0777] As a sub-implementation of this embodiment, the HARQ feedback for the first transmission of the first bit block is the first feedback signal.

[0778] As a sub-implementation of this embodiment, the HARQ feedback for the first transmission of the first bit block is the first type of HARQ feedback.

[0779] As a sub-example of this embodiment, the HARQ feedback for the first transmission of the first bit block is the second type of HARQ feedback.

[0780] As a sub-example of this embodiment, the HARQ feedback for the first transmission of the first bit block is NACK.

[0781] As an example, the UE2 sends HARQ feedback for the first transmission of the first bit block based on the decoding result of the received first bit block or first signal.

[0782] As a sub-example of this embodiment, the HARQ feedback for the first transmission of the first bit block is NACK.

[0783] As an example, the gNB subsequently sends the first retransmission of the first bit block to the UE1.

[0784] As a sub-example of this embodiment, the first retransmission of the first bit block sent to the UE1 is a HARQ retransmission.

[0785] As a sub-implementation of this embodiment, the first retransmission of the first bit block for the UE1 is for a different redundant version of the first bit block.

[0786] As a sub-implementation of this embodiment, the first retransmission of the first bit block for the UE1 is transmitted via the second signal.

[0787] As a sub-implementation of this embodiment, the first retransmission of the first bit block for the UE1 is sent via PTP.

[0788] As a sub-example of this embodiment, the first retransmission of the first bit block and the first transmission of the first bit block for the UE1 support soft merging.

[0789] As an example, the gNB subsequently sends the first retransmission of the first bit block to the UE2.

[0790] As a sub-implementation of this embodiment, the first retransmission of the first bit block for the UE2 is sent via PTP.

[0791] As a sub-implementation of this embodiment, the first retransmission of the first bit block for UE1 and the first retransmission of the first bit block for UE2 can be different redundant versions of the first bit block.

[0792] As a sub-example of this embodiment, the transmission times for the first retransmission of the first bit block for UE1 and the first retransmission of the first bit block for UE2 can be different or the same.

[0793] As an example, the HARQ feedback sent by UE1 for the first retransmission of the first bit block is the first type of HARQ feedback.

[0794] As an example, the HARQ feedback sent by UE1 for the first retransmission of the first bit block is the second feedback signal.

[0795] As an example, the HARQ feedback sent by UE1 for the first retransmission of the first bit block triggers the start of the target timer.

[0796] As an example, the advantage of the above method is that when UE1 processes retransmissions, it determines whether to start the first timer or the second timer according to the type of RNTI at the time of the first transmission (a new transmission), which is beneficial to better receive data transmitted by PTM. That is, if the RNTI used at the time of the first transmission is the second type of RNTI, then the retransmission will use the timer related to PTM, i.e. the second timer, whether it is PTM or PTP. This is beneficial to avoid confusion with unicast services and can also reduce retransmission latency.

[0797] As an example, the HARQ feedback sent by UE1 for the first retransmission of the first bit block is NACK.

[0798] As an example, after receiving HARQ feedback from at least one of the UE1 and UE2 regarding the first retransmission of the first bit block, the gNB sends a second retransmission of the first bit block.

[0799] As a sub-example of this embodiment, the second retransmission of the first bit block is sent via PTM.

[0800] As a sub-example of this embodiment, the second retransmission of the first bit block is transmitted via the third signal.

[0801] As a sub-example of this embodiment, the second type of RNTI is used for scrambling the third signal.

[0802] As an example, the first node starts a third timer and monitors the PDCCH channel during the operation of the third timer to receive further retransmissions of the first bit block.

[0803] As an example, the first node starts a retransmission timer similar to the third timer, and monitors the PDCCH channel during the operation of the retransmission timer similar to the third timer to receive further retransmissions of the first bit block.

[0804] As an example, the advantages of the above method include: different UEs can listen to or monitor the PDCCH channel at similar or the same time without being affected by the previous PTP transmission (the PTP reception time of different UEs is not necessarily synchronized), because the reception time of the first transmission of the first bit block is quasi-synchronous. The third timer is based on the first transmission of the first bit block rather than the current or previous PTP transmission, which is conducive to the unified transmission of PTM, thereby saving power.

[0805] As one example, the first timer can be triggered to run once after each HARQ feedback is sent.

[0806] As one example, the second timer can be triggered to run once after each HARQ feedback is sent.

[0807] Example 9

[0808] Example 9 illustrates a schematic diagram showing that at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal, according to an embodiment of this application, is used to determine the start of one run of the third timer, as shown in the attached diagram. Figure 9 As shown.

[0809] As an example, the third timer is a timer associated with DRX.

[0810] As one example, the third timer is used for retransmission.

[0811] As an example, the name of the third timer includes PTM.

[0812] As an example, the name of the third timer includes MBS.

[0813] As an example, the name of the third timer includes retransmission.

[0814] As an example, the third timer is drx-RetransmissionTimerDLPTM.

[0815] As an example, the expiration value of the third timer is configured by the serving cell of the first node.

[0816] As an example, one run of the third timer refers to the period from start to expiration.

[0817] As an example, the third timer can run multiple times, with each run being orthogonal in time.

[0818] As one example, the third timer can be triggered to start the next run after the first run has ended.

[0819] As an example, the start of one run of the third timer refers to the start of one run of the third timer.

[0820] As an example, the first signaling triggers the start of the first run of the third timer.

[0821] As an example, the first signal triggers the start of the first run of the third timer.

[0822] As an example, the start time or end time of the first signaling is taken as the start time of the first run of the third timer.

[0823] As an example, the start time or end time of the first signal is taken as the start time of the first run of the third timer.

[0824] As an example, the start time slot or end time slot of the first signaling is used as the start time of the first run of the third timer.

[0825] As an example, the start time slot or end time slot of the first signal is used as the start time of the first run of the third timer.

[0826] As an example, the time-frequency resources occupied by the first signaling are the start time reference of the first run of the third timer.

[0827] As an example, the time-frequency resources occupied by the earlier of the first signaling and the first signal are used to determine the start time of the first run of the third timer.

[0828] As an example, the time-frequency resources occupied by the later of the first signaling and the first signal are used to determine the start time of the first run of the third timer.

[0829] As an example, the average of the cutoff time of the time-frequency resources occupied by the first signaling and the cutoff time of the time-frequency resources occupied by the first signal is used to determine the start time of the first run of the third timer.

[0830] As an example, the time-frequency resources occupied by the first signaling are a reference to the start time count of the first run of the third timer.

[0831] As an example, the expiration time of the third timer is the time determined by the expiration value of the third timer after the reception time of the first signaling.

[0832] As an example, the expiration time of the third timer is determined by the expiration value of the third timer after the time and frequency resources occupied by the first signaling.

[0833] As an example, the first signal triggers the start of the first run of the third timer.

[0834] As an example, the time-frequency resources occupied by the first signal are the start time reference of the first run of the third timer.

[0835] As an example, the time-frequency resources occupied by the first signal are a reference for counting the start time of the first run of the third timer.

[0836] As an example, the expiration time of the third timer is the time determined by the expiration value of the third timer after the reception time of the first signal.

[0837] As an example, the expiration time of the third timer is determined by the expiration value of the third timer after the time-frequency resources occupied by the first signal.

[0838] As an example, the expiration time of the third timer is determined by a fixed time offset after the reception time of the first signal or the time-frequency resources occupied by the first signal.

[0839] As an example, the expiration time of the third timer is determined by a fixed time offset after the reception time of the first signaling or the time-frequency resources occupied by the first signaling.

[0840] As an example, the time reference for at least one of the expiration time or start time of the third timer is the reception time of the first signaling.

[0841] As an example, the time reference of at least one of the expiration time or start time of the third timer is the time resource occupied by the first signaling.

[0842] As an example, the time reference for at least one of the expiration time or start time of the third timer is the reception time of the first signal.

[0843] As an example, the time reference for at least one of the expiration time or start time of the third timer is the time resource occupied by the first signal.

[0844] Example 10

[0845] Example 10 illustrates a schematic diagram of how a system frame number and a first time length, according to an embodiment of this application, are used together to determine the start of a fifth timer, as shown in the attached diagram. Figure 10 As shown.

[0846] As an example, the fifth timer is a timer related to DRX.

[0847] As an example, the name of the fifth timer includes PTM.

[0848] As an example, the name of the fifth timer includes MBS.

[0849] As an example, the name of the fifth timer includes onDuration.

[0850] As an example, the fifth timer is drx-onDurationTimerPTM.

[0851] As an example, the fifth timer is drx-InactivityTimerPTM.

[0852] As an example, the fifth timer is for the second RNTI.

[0853] As an example, the first time length is indicated by the serving cell of the first node.

[0854] As an example, the first time length is indicated by drx-LongCycleStartOffsetPTM.

[0855] As an example, the first time length is the DRX long period.

[0856] As an example, the first time length is drx-LongCycle.

[0857] As an example, the first time length is drx-LongCyclePTM.

[0858] As an example, the system frame number is the current system frame number.

[0859] As an example, the system frame number is the system frame number used to determine whether to start the fifth timer.

[0860] As an example, the system frame number and the first time length are respectively used as input parameters to input a given formula to determine whether the fifth counter is started.

[0861] As an example, the start of the fifth timer satisfies the following formula:

[0862] [(SFN×10)+subframe number]modulo(D)=F

[0863] Wherein, SFN is the system frame number, subframe number is the subframe number, modulo is the modulo operation, D is the first time length, and F is the time offset specified by the system.

[0864] As an example, F is drx-StartOffset.

[0865] As an example, F is drx-StartOffsetPTM.

[0866] As an example, the operation period of the fifth timer is the active time.

[0867] As an example, the first MAC CE triggers the stopping of the fifth timer.

[0868] As an example, the first node monitors the PDCCH channel during the operation of the fifth timer.

[0869] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a blind detection PDCCH channel.

[0870] As a sub-example of the above embodiments, the behavior monitoring PDCCH channel includes a demodulation PDCCH channel.

[0871] As one example, the fifth timer can be run multiple times.

[0872] As an example, the LCID (Logical Channel Identity) that identifies the first MAC CE is a value other than 59 and 60.

[0873] As an example, the size of the first MAC CE is not 0.

[0874] As an example, the first MAC CE includes at least a portion of the bits of the second RNTI.

[0875] As an example, the first MAC CE is used to indicate the second RNTI.

[0876] As an example, the first MAC CE includes an index of the second RNTI.

[0877] As an example, the first MAC CE is directed to the second RNTI.

[0878] As an example, the LCID that identifies the first MAC CE indicates the second RNTI.

[0879] Example 11

[0880] Example 11 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 11 As shown. In the appendix Figure 11 In the first node, the processing device 1100 includes a first receiver 1101 and a first transmitter 1102. In embodiment 11,

[0881] A first receiver 1101 receives a first signaling, a second RNTI is used to generate a scrambling code for the first signaling, the first signaling is used to indicate a first time-frequency resource; a first signal is received on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal.

[0882] The first receiver 1101 receives a second signaling, wherein a first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; receives a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; and the first RNTI is used to generate a scrambling code for the second signal.

[0883] The first transmitter 1101 transmits a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; in response to transmitting the second feedback signal, a target timer is started for the HARQ process identified by the first HARQ process number.

[0884] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0885] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0886] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell of the first node 1100; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0887] As one embodiment, the first receiver 1101 receives a third signaling, wherein the second RNTI is used to generate a scrambling code for the third signaling, and the third signaling is used to indicate a third time-frequency resource; a third signal is received on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; the third signaling is received after the first signaling.

[0888] The first receiver 1101 starts a third timer, and at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the PDCCH channel is monitored as a response to the third signal not being correctly decoded;

[0889] The third timer is used for discontinuous reception; the second RNTI is the second type of RNTI.

[0890] As one embodiment, the first receiver 1101 receives a first message, which is used to indicate a first expiration value and a second expiration value;

[0891] The first transmitter 1102 sends a first feedback signal, and in response to sending the first feedback signal, starts the second timer for the HARQ process identified by the first HARQ process number; the sending of the first feedback signal is later than the receiving of the first signal.

[0892] Wherein, the second RNTI is the second type of RNTI; the first feedback signal occupies one of the first PUCCH resource or the first PUCCH enhancement resource; whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal;

[0893] The meaning of the sentence "Whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is:

[0894] When the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0895] As one embodiment, the first transmitter 1102, in response to the expiration of the target timer, operates a third timer that is in operation;

[0896] The first receiver 1101 monitors the PDCCH channel during the operation of the third timer;

[0897] The third timer in the running state of the behavioral operation includes at least one of {restart, maintain, modify expired value}; the third timer is used for discontinuous reception.

[0898] As one embodiment, the first signaling includes a first field, which is used to indicate the timing between PDSCH and HARQ feedback; whether the first field includes a non-numeric type indication or a numeric type indication is used to determine the expiration value of the fourth timer;

[0899] The first receiver 1101 monitors the PDCCH channel during the operation of the fourth timer;

[0900] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the first signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the first signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0901] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0902] As one embodiment, the first transmitter 1102 sends a first feedback signal, and in response to sending the first feedback signal, starts a second timer for the HARQ process identified by the first HARQ process number; the sending of the first feedback signal is later than the receiving of the first signal.

[0903] The first signaling includes a first field, which indicates whether the timing between the PDSCH and the HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal.

[0904] The meaning of the sentence "Whether the first field indicates the timing between PDSCH and HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is: when the first feedback signal occupies the first PUCCH resource, the first field indicates the timing between PDSCH and HARQ feedback; when the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback.

[0905] As one embodiment, the first receiver 1101 receives a first MAC CE; the first MAC CE is for the second RNTI; the second RNTI is a second type of RNTI; in response to receiving the first MAC CE, a fifth timer is stopped; the fifth timer is for the second RNTI;

[0906] The first receiver 1101 monitors the PDCCH channel during the operation of the fifth timer;

[0907] The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception.

[0908] As an example, the first node is a user equipment (UE).

[0909] As an example, the first node is a terminal that supports large latency differences.

[0910] As an example, the first node is an NTN-enabled terminal.

[0911] As an example, the first node is an aircraft.

[0912] As an example, the first node is a vehicle-mounted terminal.

[0913] As an example, the first node is a relay.

[0914] As an example, the first node is a ship.

[0915] As an example, the first node is an Internet of Things (IoT) terminal.

[0916] As an example, the first node is an industrial Internet of Things (IIoT) terminal.

[0917] As an example, the first node is a device that supports low-latency, high-reliability transmission.

[0918] As an example, the first node is a secondary link communication node.

[0919] As one embodiment, the first receiver 1101 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0920] As one embodiment, the first transmitter 1102 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0921] Example 12

[0922] Example 12 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of this application; as shown in the appendix. Figure 12 As shown. In the appendix Figure 12 In the second node, the processing device 1200 includes a second transmitter 1201 and a second receiver 1202. In embodiment 12,

[0923] The second transmitter 1201 transmits a first signaling, a second RNTI is used to generate a scrambling code for the first signaling, the first signaling is used to indicate a first time-frequency resource; a first signal is transmitted on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is a first HARQ process number; the second RNTI is used to generate a scrambling code for the first signal.

[0924] The second transmitter 1201 transmits a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; a second signal is transmitted on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; and the first RNTI is used to generate a scrambling code for the second signal.

[0925] The second receiver 1202 receives a second feedback signal on a first PUCCH resource, the first PUCCH resource being used to transmit a first type of HARQ feedback signal; the transmission of the second feedback signal is used to start a target timer for the HARQ process identified by the first HARQ process number.

[0926] Wherein, the first RNTI is a first type of RNTI; the second RNTI is one of the first type of RNTI and the second type of RNTI; the first type of RNTI and the second type of RNTI are different; whether the target timer is the first timer or the second timer is related to whether the second RNTI is the first type of RNTI or the second type of RNTI;

[0927] The meaning of whether the target timer mentioned in the sentence is the first timer or the second timer, and whether the second RNTI is the first type of RNTI or the second type of RNTI, is as follows:

[0928] When the second RNTI is the second type of RNTI, the target timer is the second timer; when the second RNTI is the first type of RNTI, the target timer is the first timer; the first timer and the second timer are respectively used for discontinuous reception; the first timer is for the serving cell; the second timer is related to non-unicast transmission and the second timer is for the second type of RNTI.

[0929] As one embodiment, the second transmitter 1201 transmits a third signaling, wherein the second RNTI is used to generate a scrambling code for the third signaling, and the third signaling is used to indicate a third time-frequency resource; a third signal is transmitted on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; and the third signaling is received after the first signaling.

[0930] At least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the incorrect decoding of the third signal is used to trigger the monitoring of the PDCCH channel;

[0931] The third timer is used for discontinuous reception; the second RNTI is the second type of RNTI.

[0932] As one embodiment, the second transmitter 1201 sends a first message, which is used to indicate a first expiration value and a second expiration value;

[0933] The second receiver 1202 receives a first feedback signal, the transmission of which is used to trigger the start of the second timer for the HARQ process identified by the first HARQ process number; the transmission of the first feedback signal is later than the reception of the first signal.

[0934] Wherein, the second RNTI is the second type of RNTI; the first feedback signal occupies one of the first PUCCH resource or the first PUCCH enhancement resource; whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal;

[0935] The meaning of the sentence "Whether the expiration value of the second timer is the first expiration value or the second expiration value is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is:

[0936] When the first feedback signal occupies the first PUCCH resource, the expiration value of the second timer is the first expiration value; when the first feedback signal occupies the first PUCCH enhancement resource, the expiration value of the second timer is the second expiration value.

[0937] As one embodiment, the first signaling includes a first field, which is used to indicate the timing between PDSCH and HARQ feedback; whether the first field includes a non-numeric type indication or a numeric type indication is used to determine the expiration value of the fourth timer;

[0938] The meaning of whether the first field of the sentence includes a non-numeric type indication or a numeric type indication used to determine the expiration value of the fourth timer is: when the first field includes a non-numeric type indication, the first signaling is used to trigger the fourth timer, and the expiration value of the fourth timer is the third expiration value; when the first field includes a numeric type indication, the first signaling is used to trigger the second timer, the expiration of the second timer triggers the fourth timer, and the expiration value of the fourth timer is the fourth expiration value.

[0939] The third expiration value is different from the fourth expiration value; the fourth timer is used for discontinuous reception.

[0940] As one embodiment, the second receiver 1202 receives a first feedback signal, the transmission of which is used to trigger the start of a second timer for the HARQ process identified by the first HARQ process number; the transmission of the first feedback signal is later than the reception of the first signal.

[0941] The first signaling includes a first field, which indicates whether the timing between the PDSCH and the HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource; the first PUCCH enhancement resource is used to transmit the second type of HARQ feedback signal.

[0942] The meaning of the sentence "Whether the first field indicates the timing between PDSCH and HARQ feedback is related to whether the first feedback signal occupies the first PUCCH resource or the first PUCCH enhancement resource" is: when the first feedback signal occupies the first PUCCH resource, the first field indicates the timing between PDSCH and HARQ feedback; when the first feedback signal occupies the first PUCCH enhancement resource, the first field does not indicate the timing between PDSCH and HARQ feedback.

[0943] As one embodiment, the second transmitter 1201 transmits a first MAC CE; the first MAC CE is for the second RNTI; the second RNTI is a second type of RNTI; the first MAC CE is used to stop a fifth timer; the fifth timer is for the second RNTI;

[0944] The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception.

[0945] In one embodiment, the second node is a satellite.

[0946] In one embodiment, the second node is a base station.

[0947] As one example, the second node is a relay.

[0948] As one example, the second node is an access point.

[0949] As an example, the second node is a multicast-enabled node.

[0950] As one embodiment, the second transmitter 1201 includes at least one of the following in embodiment 4: antenna 420, transmitter 418, transmission processor 416, multi-antenna transmission processor 471, controller / processor 475, and memory 476.

[0951] As one embodiment, the second receiver 1202 includes at least one of the following in embodiment 4: antenna 420, receiver 418, receiver processor 470, multi-antenna receiver processor 472, controller / processor 475, and memory 476.

[0952] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, wireless sensors, internet cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, satellite communication equipment, ship communication equipment, NTN user equipment, and other wireless communication equipment. The base stations or system equipment in this application include, but are not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), NTN base stations, satellite equipment, flight platform equipment, and other wireless communication equipment.

[0953] This invention may be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node used for wireless communication, wherein, include: A first receiver receives a first signaling signal, and a second RNTI is used to generate a scrambling code for the first signaling signal, which is used to indicate a first time-frequency resource. A first signal is received on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is the first HARQ process number; the second RNTI is used to generate the scrambling code of the first signal; A first transmitter sends a second feedback signal on a first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; the first type of HARQ feedback signal is ACK-NACK feedback; in response to sending the second feedback signal, a target timer is started for the HARQ process identified by the first HARQ process number; in response to sending the second feedback signal, a sixth timer is started for the HARQ process identified by the first HARQ process number; the sixth timer is different from the target timer; the sixth timer is drx-HARQ-RTT-TimerDL; The first transmitter, in response to the expiration of the target timer, starts a third timer; the third timer is related to receive retransmission and its name includes PTM and retransmission; in response to the expiration of the sixth timer, it starts a seventh timer; the third timer is different from the seventh timer; the seventh timer is drx-RetransmissionTimerDL; The first receiver uses the second RNTI to listen to the PDCCH channel during the operation of the third timer; During the operation of the seventh timer, the PDCCH channel is monitored using the first RNTI; The first receiver receives a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; receives a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; and the first RNTI is used to generate a scrambling code for the second signal. Wherein, the first RNTI is a first type RNTI; the second RNTI is a second type RNTI; the first type RNTI and the second type RNTI are different; the first type RNTI includes C-RNTI; the second type RNTI is G-RNTI or G-CS-RNTI; the target timer is a second timer; the second timer is related to non-unicast transmission and the second timer is for the second type RNTI; the name of the second timer includes drx and PTM; the third timer and the seventh timer are both used for discontinuous reception.

2. The first node according to claim 1, characterized in that, include: The first receiver receives the third signaling, the second RNTI is used to generate the scrambling code of the third signaling, and the third signaling is used to indicate the third time-frequency resource; A third signal is received on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; the third signaling is received after the first signaling. The first receiver starts the third timer, and at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the PDCCH channel is monitored as a response to the third signal not being correctly decoded.

3. The first node according to claim 1, characterized in that, include: The first transmitter, in response to the expiration of the target timer, operates the third timer, which is in operation. The first receiver monitors the PDCCH channel during the operation of the third timer; The third timer in the running state of the operation includes at least one of {restart, maintain, modify expired value}.

4. The first node according to claim 1, characterized in that, include: The first receiver receives the first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; The first receiver monitors the PDCCH channel during the operation of the fifth timer; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

5. The first node according to claim 2, characterized in that, include: The first receiver receives the first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; The first receiver monitors the PDCCH channel during the operation of the fifth timer; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

6. The first node according to claim 3, characterized in that, include: The first receiver receives the first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; The first receiver monitors the PDCCH channel during the operation of the fifth timer; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

7. The first node according to any one of claims 1 to 6, characterized in that, The first type of HARQ feedback signal is a HARQ feedback signal other than NACK-only.

8. The first node according to claim 1, characterized in that, The second timer is configured by DRX-ConfigPTM; each HARQ process scheduled by each G-RNTI scrambled PDCCH is associated with an instance of the second timer.

9. The first node according to claim 1, characterized in that, The second timer is drx-HARQ-RTT-TimerDL-PTM.

10. A method used in a first node of wireless communication, wherein, include: Upon receiving the first signaling, the second RNTI is used to generate a scrambling code for the first signaling, and the first signaling is used to indicate the first time-frequency resource; A first signal is received on the first time-frequency resource; a first bit block is used to generate the first signal; the first signaling indicates a new transmission; the first signaling indicates that the HARQ process number of the first signal is the first HARQ process number; the second RNTI is used to generate the scrambling code of the first signal; A second feedback signal is sent on a first PUCCH resource, which is used to transmit a first type of HARQ feedback signal; in response to sending the second feedback signal, a target timer is started for the HARQ process identified by the first HARQ process number; in response to sending the second feedback signal, a sixth timer is started for the HARQ process identified by the first HARQ process number; the sixth timer is different from the target timer; the sixth timer is drx-HARQ-RTT-TimerDL; In response to the expiration of the target timer, a third timer is started; the third timer is related to receive retransmission and its name includes PTM and retransmission; in response to the expiration of the sixth timer, a seventh timer is started; the third timer is different from the seventh timer; the seventh timer is drx-RetransmissionTimerDL. During the operation of the third timer, the PDCCH channel is monitored using the second RNTI; During the operation of the seventh timer, the PDCCH channel is monitored using the first RNTI; Receive a second signaling, wherein the first RNTI is used to generate a scrambling code for the second signaling, and the second signaling is used to indicate a second time-frequency resource; receive a second signal on the second time-frequency resource; the first bit block is used to generate the second signal; the second signaling is used to indicate a retransmission; the second signaling indicates that the HARQ process number of the second signal is the first HARQ process number; the first RNTI is used to generate a scrambling code for the second signal; Wherein, the first RNTI is a first type RNTI; the second RNTI is a second type RNTI; the first type RNTI and the second type RNTI are different; the first type RNTI includes C-RNTI; the second type RNTI is G-RNTI or G-CS-RNTI; the target timer is a second timer; the second timer is related to non-unicast transmission and the second timer is for the second type RNTI; the name of the second timer includes drx and PTM; the third timer and the seventh timer are both used for discontinuous reception.

11. The method in the first node according to claim 10, characterized in that, include: Receive the third signaling, the second RNTI is used to generate the scrambling code of the third signaling, and the third signaling is used to indicate the third time-frequency resource; A third signal is received on the third time-frequency resource; the first bit block is used to generate the third signal; the third signaling is used to indicate a retransmission; the third signaling indicates that the HARQ process number of the third signal is the first HARQ process number; the third signaling is received after the first signaling. The third timer is started, and at least one of the time-frequency resources occupied by the first signaling and the time-frequency resources occupied by the first signal is used to determine the start of one run of the third timer; during the one run of the third timer, the PDCCH channel is monitored as a response to the third signal not being correctly decoded.

12. The method in the first node according to claim 10, characterized in that, include: In response to the expiration of the target timer, the third timer, which is in a running state, is operated; During the operation of the third timer, the PDCCH channel is monitored; The third timer in the running state of the operation includes at least one of {restart, maintain, modify expired value}.

13. The method in the first node according to claim 10, characterized in that, include: Receive first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; During the operation of the fifth timer, the PDCCH channel is monitored; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

14. The method in the first node according to claim 11, characterized in that, include: Receive first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; During the operation of the fifth timer, the PDCCH channel is monitored; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

15. The method in the first node according to claim 12, characterized in that, include: Receive first MAC CE; The first MAC CE is for the second RNTI; In response to receiving the first MAC CE, stop the fifth timer; The fifth timer is for the second RNTI; During the operation of the fifth timer, the PDCCH channel is monitored; The system frame number and the first time length are used together to determine the start of the fifth timer; the fifth timer is used for discontinuous reception; the fifth timer is drx-onDurationTimerPTM; and the first time length is indicated by drx-LongCycleStartOffsetPTM.

16. The method in the first node according to any one of claims 10 to 15, characterized in that, The first type of HARQ feedback signal is a HARQ feedback signal other than NACK-only.

17. The method in the first node according to claim 10, characterized in that, The second timer is configured by DRX-ConfigPTM; each HARQ process scheduled by each G-RNTI scrambled PDCCH is associated with an instance of the second timer.

18. The method in the first node according to claim 10, characterized in that, The second timer is drx-HARQ-RTT-TimerDL-PTM.

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