CN116746169A

CN116746169A - Semi-static scheduling resource allocation method, semi-static scheduling method and device

Info

Publication number: CN116746169A
Application number: CN202180089007.3A
Authority: CN
Inventors: 辛婷玉; 李秉肇; 陈磊; 肖潇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2023-09-12
Also published as: WO2022151284A1

Abstract

The application discloses a semi-static scheduling resource allocation method, a semi-static scheduling method and a semi-static scheduling device. The semi-static scheduling resource allocation method comprises the following steps: the terminal equipment receives first information sent by the network equipment, wherein the first information is used for carrying out semi-static scheduling resource configuration on a first group of terminal equipment, and the first information is used for indicating a period P of frequency domain resources and a first starting time O1; and the terminal equipment receives the data of the first MBS transmitted by the network equipment at a first moment T1 by using the frequency domain resource, wherein the first moment T1 satisfies T1 = O1+ NP, and N is a positive integer. The network device performs semi-persistent scheduling resource allocation uniformly for a group of terminal devices, so that SPS resource allocation for MBS service can be realized with lower signaling overhead.

Description

Semi-static scheduling resource allocation method, semi-static scheduling method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a semi-static scheduling resource allocation method, a semi-static scheduling method, and an apparatus thereof.

Background

As shown in fig. 1, in a New Radio (NR) communication system, a multicast broadcast service (multicast broadcast service, MBS) is called a multimedia broadcast multicast service (multimedia broadcast multicast service, MBMS) in long term evolution (long term evolution, LTE), and is a service for a plurality of User Equipments (UEs), such as live broadcast, time-play programs, and the like. The MBS technique refers to a technique of simultaneously transmitting MBS data to a plurality of UEs through a base station. The UE-specific bearer may be established between the base station and the UE to send MBS data to the UE in unicast, however, when a large number of UEs need to receive certain MBS data, a dedicated bearer needs to be established for a large number of UEs, which consumes a large amount of resources. The MBS data may also be transmitted to the UE in a broadcast form through an MBS-dedicated bearer, so that only the MBS-dedicated bearer needs to be established, and all UEs interested in the MBS service may receive the MBS data.

The downlink scheduling manner of the base station can be divided into dynamic scheduling and semi-persistent scheduling (SPS). The base station dynamically schedules downlink transmissions, each time it is required to send downlink control information (downlink control information, DCI) to the UE. For frequent downlink data transmission and a huge number of users, the overhead of the required control information is large. The downlink transmission by using SPS is characterized in that: and one grant (grant) is used periodically, so that resources occupied by DCI (downlink control information) for scheduling indication by the base station can be effectively saved. That is, the base station can activate a series of periodic downlink resources for the UE through one DCI scheduling, where the downlink resources are used for transmitting downlink data, so that the UE can receive the downlink data on the corresponding resources, and the base station does not need to use one DCI to notify the UE of the corresponding resource position every time the base station performs downlink transmission.

However, the current SPS resource allocation is only for unicast service, and how to perform SPS resource allocation for MBS service is not achieved yet, so that SPS resource allocation for MBS service with lower signaling overhead is not achieved yet.

Disclosure of Invention

The embodiment of the application provides a semi-persistent scheduling resource allocation method, a semi-persistent scheduling method and a device, which realize SPS resource allocation of MBS business with lower signaling overhead.

In a first aspect, a semi-static scheduling resource allocation method is provided, the method includes: receiving first information, wherein the first information is used for carrying out semi-static scheduling resource configuration on a first group of terminal equipment, and the first information is used for indicating a period P of frequency domain resources and a first starting time O1; and at a first time T1, receiving data of a first multicast broadcast service MBS using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer. In this aspect, the network device performs semi-persistent scheduling resource allocation for a group of terminal devices in a unified manner, so that resource allocation for SPS of MBS service can be implemented with lower signaling overhead.

In one possible implementation, the method further comprises: third information is received, the third information being used to deactivate the frequency domain resource. In this aspect, when the network device wants to deactivate/release SPS resources of the MBS service, e.g. at the end of the service, there is no data of the MBS service for a period of time, the terminal device receives a deactivation command sent by the network device.

In yet another possible implementation, the first information includes radio resource control information and downlink control information, where the downlink control information is scrambled with a group radio network temporary identifier of the first group of terminal devices; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices. In this implementation, the network device uniformly performs SPS resource configuration on the first group of terminal devices, and then scrambling may be performed by using the group-based wireless network temporary identifier, where the first group of terminal devices receives downlink control information scrambled by using the group-based wireless network temporary identifier, and it may be known that the downlink control information is used to schedule MBS data.

In yet another possible implementation, the first information includes first radio resource control information including the P and first downlink control information including the O1.

In yet another possible implementation, the first information is first broadcast information, the first broadcast information including at least one of: and P is a reference time, wherein the reference time is used for determining the O1.

In yet another possible implementation, the first information is a first medium access control unit or a first radio resource control information, and the first medium access control unit or the first radio resource control information includes at least one of the following information: and P is a reference time, wherein the reference time is used for determining the O1.

In a second aspect, a semi-static scheduling resource allocation method is provided, and the method includes: transmitting first information to a first group of terminal equipment, wherein the first information is used for indicating a period P of frequency domain resources and a first starting time O1; and at a first time T1, transmitting data of a first multicast broadcast service MBS to the first group of terminal devices by using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer. In this aspect, the network device performs semi-persistent scheduling resource allocation for a group of terminal devices in a unified manner, so that resource allocation for SPS of MBS service can be implemented with lower signaling overhead.

In one possible implementation, the method further comprises: transmitting second information to a second group of terminal equipment, wherein the second information is used for indicating a second starting time O2 of the frequency domain resource, O2 and O1 meet the condition that O2=O1+MP, and M is an integer greater than or equal to 0; and at a second time T2, transmitting the data of the first MBS to the second group of terminal devices using the frequency domain resource, where T2 satisfies t2=o2+kp, and K is a positive integer. In this implementation, if there are non-activated terminal devices or new incoming terminal devices, the network sets semi-static scheduling resources that uniformly activate the terminal devices, and the semi-static scheduling resources of the terminal devices and the semi-static scheduling resources of the already activated group of terminal devices, so as to achieve reliable reception of MBS data.

In yet another possible implementation, the method further includes: and sending third information to the third group of terminal equipment, wherein the third information is used for deactivating the frequency domain resource. In the implementation, the network device can perform the deactivation of the semi-static scheduling resource in a unified way for all the terminal devices, so that the deactivated semi-static scheduling resource is released, and the utilization rate of the semi-static scheduling resource is improved.

In yet another possible implementation, the method further includes: receiving feedback information of at least one terminal device in the third group of terminal devices; the feedback information of all the terminal devices in the third group of terminal devices is not received, fourth information is sent to the third group of terminal devices until the feedback information of all the terminal devices in the third group of terminal devices is received, and the fourth information is used for deactivating the frequency domain resource; and releasing the frequency domain resources.

In yet another possible implementation, the first information includes radio resource control information and downlink control information, where the downlink control information is scrambled with a group radio network temporary identifier of the first group of terminal devices; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices.

In yet another possible implementation, the first information includes first radio resource control information including the P and first downlink control information including the O1; and/or the second information includes second radio resource control information and second downlink control information, the second radio resource control information includes the P, and the second downlink control information includes the O2.

In yet another possible implementation, the first information is first broadcast information, the first broadcast information including at least one of: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is second broadcast information, the second broadcast information including at least one of: the P, the reference time is used for determining the O2.

In yet another possible implementation, the first information is a first medium access control unit or a first radio resource control information, and the first medium access control unit or the first radio resource control information includes at least one of the following information: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is a second medium access control unit or second radio resource control information, the second medium access control unit or second radio resource control information comprising at least one of the following information: the P, the reference time is used for determining the O2.

In a third aspect, a semi-static scheduling method is provided, the method comprising: receiving a retransmission packet during wakeup in discontinuous reception mode; extending the awake period for a first period of time; and detecting an activation command during the extended wakeup period, the activation command to activate a semi-persistent scheduling resource. In this aspect, the terminal device receives the retransmission packet during the awake period of the discontinuous reception mode, lengthens the awake period by a first period, and detects an activation command for activating the semi-persistent scheduling resource during the prolonged awake period, whereby the reliability of the terminal device receiving the activation command of the SPS resource can be improved.

In a fourth aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. The terminal device may be a terminal in any of the above-mentioned first aspect or any of the possible implementations of the first aspect, or a module applied in a terminal, such as a chip or a chip system. The terminal equipment comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the fourth aspect, in one possible implementation manner, the terminal device includes: a transmitting/receiving unit; wherein:

the receiving and transmitting unit is configured to receive first information, where the first information is used to perform semi-static scheduling resource configuration on a first group of terminal devices, and the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and the transceiver unit is further configured to receive, at a first time T1, data of the first multicast broadcast service MBS using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer.

In a possible implementation, the transceiver unit is further configured to receive third information, where the third information is used to deactivate the frequency domain resource.

With reference to the fourth aspect, in a further possible implementation manner, the terminal device includes: an input interface, an output interface, and a processing circuit;

the input interface is configured to receive first information, where the first information is used to perform semi-static scheduling resource configuration on a first group of terminal devices, and the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and the input interface is further configured to receive, at a first time T1, data of the first multicast broadcast service MBS using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer.

In a possible implementation, the input interface is further configured to receive third information, where the third information is used to deactivate the frequency domain resource.

The terminal device further comprises a memory coupled to the at least one processor for executing program instructions stored in the memory for causing the terminal device to perform the method of the first aspect or any one of the possible implementations of the first aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the at least one processor, which may invoke and execute program instructions stored in the memory to cause the terminal device to perform the method of the first aspect or any possible implementation of the first aspect.

The terminal device further comprises a communication interface for the terminal device to communicate with other devices, for example. When the terminal device is a terminal, the communication interface is a transceiver, an input/output interface, or a circuit, etc.

In one possible design, the terminal device comprises: at least one processor and a communication interface for performing the method of the first aspect or any of the possible implementations of the first aspect, in particular comprising: the at least one processor communicates with the outside using the communication interface; the at least one processor is configured to run a computer program to cause the terminal device to perform the method of the first aspect or any of the possible implementations of the first aspect. It will be appreciated that the external part may be an object other than the processor or an object other than the terminal device.

In another possible design, the terminal device is a chip or a chip system. The communication interface may be an input/output interface, interface circuitry, output circuitry, input circuitry, pins or related circuitry, etc. on the chip or system-on-chip. The processor may also be embodied as processing circuitry or logic circuitry.

The technical effects caused by any one of the design manners in the fourth aspect may be referred to the technical effects caused by the different design manners in the first aspect, which are not described herein.

In a fifth aspect, there is provided a network device for performing the method of the second aspect or any one of the possible implementations of the second aspect. The network device may be a network device as in the second aspect or any possible implementation of the second aspect, or a module applied in a network device, such as a chip or a chip system. The network device comprises a module, a unit or means for implementing the method, wherein the module, the unit or the means can be implemented by hardware, software or implemented by hardware for executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the fifth aspect, in one possible implementation manner, the network device includes: the receiving and transmitting unit can also comprise a processing unit; wherein:

the receiving and transmitting unit is configured to send first information to a first group of terminal devices, where the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and the transceiver unit is further configured to send, at a first time T1, data of a first multicast broadcast service MBS to the first group of terminal devices using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer.

In a possible implementation, the transceiver unit is further configured to send second information to a second group of terminal devices, where the second information is used to indicate a second starting time O2 of the frequency domain resource, where O2 and O1 satisfy o2=o1+mp, and M is an integer greater than or equal to 0; and the transceiver unit is further configured to send, at a second time T2, the data of the first MBS to the second group of terminal devices using the frequency domain resource, where T2 satisfies t2=o2+kp, and K is a positive integer.

In a further possible implementation, the transceiver unit is further configured to send third information to the third group of terminal devices, where the third information is used to deactivate the frequency domain resources.

In a further possible implementation, the transceiver unit is further configured to receive feedback information of at least one terminal device in the third group of terminal devices; the transceiver unit is further configured to send fourth information to the third group of terminal devices until feedback information of all terminal devices in the third group of terminal devices is received, where the fourth information is used to deactivate the frequency domain resource; and the processing unit is used for releasing the frequency domain resource.

With reference to the fifth aspect, in a further possible implementation manner, the network device includes: an input interface, an output interface, and a processing circuit;

the output interface is configured to send first information to a first group of terminal devices, where the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and the output interface is further configured to send, at a first time T1, data of a first multicast broadcast service MBS to the first group of terminal devices using the frequency domain resource, where the first time T1 satisfies t1=o1+np, and N is a positive integer.

In a possible implementation, the output interface is further configured to send second information to a second group of terminal devices, where the second information is used to indicate a second starting time O2 of the frequency domain resource, where O2 and O1 satisfy o2=o1+mp, and M is an integer greater than or equal to 0; and the output interface is further configured to send, at a second time T2, the data of the first MBS to the second group of terminal devices using the frequency domain resource, where T2 satisfies t2=o2+kp, and K is a positive integer.

In a further possible implementation, the output interface is further configured to send third information to the third group of terminal devices, where the third information is used to deactivate the frequency domain resources.

In a further possible implementation, the input interface is configured to receive feedback information of at least one terminal device in the third group of terminal devices; the output interface is further configured to send fourth information to the third group of terminal devices until feedback information of all terminal devices in the third group of terminal devices is received, where the fourth information is used to deactivate the frequency domain resource; and the processing circuit is used for releasing the frequency domain resource.

Illustratively, the network device further comprises a memory coupled to the at least one processor for executing program instructions stored in the memory to cause the network device to perform the method of the second aspect or any one of the possible implementations of the second aspect described above.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the at least one processor, which may invoke and execute program instructions stored in the memory to cause the network device to perform the method of the second aspect or any possible implementation of the second aspect described above.

The network device also illustratively includes a communication interface for the network device to communicate with other devices. When the network device is a network device, the communication interface is a transceiver, an input/output interface, or a circuit, etc.

In one possible design, the network device includes: at least one processor and a communication interface for performing the method of the second aspect or any of the possible implementations of the second aspect, in particular comprising: the at least one processor communicates with the outside using the communication interface; the at least one processor is configured to run a computer program to cause the network device to perform the method of the second aspect or any one of the possible implementations of the second aspect. It will be appreciated that the external may be an object external to the processor or external to the network device.

In another possible design, the network device is a chip or a system-on-chip. The communication interface may be an input/output interface, interface circuitry, output circuitry, input circuitry, pins or related circuitry, etc. on the chip or system-on-chip. The processor may also be embodied as processing circuitry or logic circuitry.

The technical effects of any one of the design manners in the fifth aspect may be referred to the technical effects of the different design manners in the second aspect, which are not repeated herein.

A sixth aspect provides a communication system comprising a terminal device in any of the implementations of the fourth or fourth aspects described above, and a network device in any of the implementations of the fifth or fifth aspects.

A seventh aspect provides a terminal device for performing the method of the first aspect or any of the possible implementations of the first aspect. The terminal device may be a terminal in any of the above-mentioned first aspect or any of the possible implementations of the first aspect, or a module applied in a terminal, such as a chip or a chip system. The terminal equipment comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the seventh aspect, in one possible implementation manner, the terminal device includes: a transceiver unit and a processing unit; wherein:

The receiving and transmitting unit is used for receiving retransmission data packets during the wake-up period of the discontinuous reception mode; the processing unit is configured to extend the awake period by a first period of time; and the processing unit is further configured to detect an activation command during the extended wakeup period, the activation command being used to activate a semi-persistent scheduling resource.

With reference to the seventh aspect, in a further possible implementation manner, the terminal device includes: an input interface, an output interface, and a processing circuit; wherein:

the input interface is used for receiving retransmission data packets during the wake-up period of the discontinuous reception mode; the processing circuit is configured to extend the wakeup period by a first period of time; and the processing circuitry is further to detect an activation command during the extended wakeup period, the activation command to activate a semi-persistent scheduling resource.

The technical effects of any one of the design manners of the seventh aspect may be referred to the technical effects of the third aspect, which are not described herein.

In an eighth aspect, a downlink scheduling method is provided, where the method includes: receiving downlink scheduling information; and determining a first downlink scheduling mode and corresponding wireless network temporary identification descrambling downlink scheduling information and/or downlink control information format. In this aspect, the terminal device descrambles the downlink scheduling information according to the radio network temporary identifier corresponding to the determined downlink scheduling mode, thereby improving the reliability of downlink scheduling.

A ninth aspect provides a terminal device for performing the method of the eighth aspect or any possible implementation of the eighth aspect. The terminal device may be a terminal in any of the above eighth or any of the possible implementations of the eighth aspect, or a module applied in a terminal, such as a chip or a chip system. The terminal equipment comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the ninth aspect, in one possible implementation manner, the terminal device includes: a transceiver unit and a processing unit; wherein: the receiving and transmitting unit is used for receiving downlink scheduling information; the processing unit is configured to determine a first downlink scheduling mode and a corresponding radio network temporary identifier descramble downlink scheduling information and/or DCI format.

With reference to the ninth aspect, in a further possible implementation manner, the terminal device includes: an input interface, an output interface, and a processing circuit; the input interface is used for receiving downlink scheduling information; the processing circuit is configured to determine a first downlink scheduling mode and a corresponding radio network temporary identifier descramble downlink scheduling information and/or DCI format.

The terminal device further comprises a memory coupled to the at least one processor for executing program instructions stored in the memory for causing the terminal device to perform the method of the eighth aspect or any one of the possible implementations of the eighth aspect as described above.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the at least one processor, which may invoke and execute program instructions stored in the memory to cause the terminal device to perform the method in any of the possible implementations of the eighth aspect or eighth aspect described above.

In one possible design, the terminal device comprises: at least one processor and a communication interface for performing the method of the eighth aspect or any of the possible implementations of the eighth aspect, in particular comprising: the at least one processor communicates with the outside using the communication interface; the at least one processor is configured to run a computer program to cause the terminal device to perform the method of the eighth aspect or any one of the possible implementations of the eighth aspect. It will be appreciated that the external part may be an object other than the processor or an object other than the terminal device.

The technical effects of any one of the design manners in the ninth aspect may be referred to the technical effects of the different design manners in the eighth aspect, which are not repeated herein.

In a tenth aspect, there is provided a computer readable storage medium storing a computer program which, when run on a computer, performs the method of any one of the aspects or aspects described above.

In an eleventh aspect, there is provided a computer program product which, when run on a computer, causes any one of the above aspects or aspects to be carried out.

In a twelfth aspect, there is provided a computer program which, when run on a computer, causes the above aspects or any one of the aspects to be carried out.

Drawings

Fig. 1 is a schematic diagram of a communication system for transmitting MBS data;

fig. 2 is a schematic structural diagram of a terminal device/network device 300 according to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a semi-static scheduling resource allocation method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of SPS configuration for unicast traffic;

FIG. 5 is a schematic diagram of a network device re-activating time domain resources of an SPS that are inconsistent with time domain resources of an SPS that was first unsuccessfully activated;

FIG. 6 is a flowchart illustrating another method for allocating semi-persistent scheduling resources according to an embodiment of the present application;

fig. 7 is a schematic diagram of semi-persistent scheduling resource configuration for an inactive terminal device or a new terminal device according to an embodiment of the present application;

fig. 8 is a schematic diagram of semi-static scheduling resource allocation by a medium access control unit;

FIG. 9 is a schematic diagram of discontinuous reception;

fig. 10 is a schematic flow chart of a semi-static scheduling method according to an embodiment of the present application;

FIG. 11 is a schematic diagram illustrating a method for receiving an activation command of a semi-persistent scheduling resource after an extended wakeup period according to an embodiment of the present application;

fig. 12 is a flow chart of a downlink scheduling method according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

FIG. 16 is a simplified schematic diagram of a terminal device;

fig. 17 is a simplified schematic diagram of a network device.

Detailed Description

The technical scheme of the embodiment of the application can be applied to various communication systems. For example: LTE system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, LTE-advanced (enhanced long term evolution, elet), fifth generation (5th generation,5G) communication system, NR, etc., the 5G mobile communication system referred to in the present application includes a non-independent Networking (NSA) 5G mobile communication system or an independent networking (SA) 5G mobile communication system. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a public land mobile network (public land mobile network, PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (machine to machine, M2M) communication system, an internet of things (internet of things, ioT), an internet of vehicles communication system, or other communication system.

The various communication systems described above may be used to transmit MBS data. A schematic diagram of a communication system for transmitting MBS data is shown in fig. 1. The communication system may comprise at least one network device 100 (only 1 is shown in the figure) and one or more terminal devices 200 connected to the network device 100.

Optionally, the terminal device in the embodiments of the present application may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a relay station, a remote terminal, a mobile device, a user terminal (user terminal), a UE, a terminal (terminal), a wireless communication device, a user agent, a user equipment, a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with a wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a future 5G network, or a terminal device in a future evolved PLMN, or a terminal device in a future vehicle network, etc., which is not limited in this embodiment of the present application.

By way of example and not limitation, in embodiments of the present application, the terminal device may be a cell phone, tablet computer, computer with wireless transceiver function, virtual reality terminal, augmented reality terminal, wireless terminal in industrial control, wireless terminal in unmanned operation, wireless terminal in teleoperation, wireless terminal in smart grid, wireless terminal in transportation security, wireless terminal in smart city, wireless terminal in smart home, etc.

As an example and not by way of limitation, in the embodiments of the present application, the wearable device may also be referred to as a wearable intelligent device, which is a generic term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, apparel, shoes, and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the application, the terminal equipment can also be a terminal in an IoT system, and the IoT is an important component of the development of future information technology, and the main technical characteristics of the terminal equipment are that the article is connected with a network through a communication technology, so that the man-machine interconnection and the intelligent network of the article interconnection are realized. In the embodiment of the application, the IoT technology can achieve mass connection, deep coverage and terminal power saving through, for example, a Narrowband (NB) technology.

In addition, in the embodiment of the application, the terminal equipment can also comprise sensors such as an intelligent printer, a train detector, a gas station and the like, and the main functions comprise collecting data (part of the terminal), receiving control information and downlink data of the network equipment, sending electromagnetic waves and transmitting the uplink data to the network equipment.

Optionally, the network device in the embodiment of the present application may be any communication device having a wireless transceiver function for communicating with a terminal. The network devices include, but are not limited to: an evolved node B (eNB), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (transmission point, TP), or a transmission reception point (transmission reception point, TRP), and so on. The network device may also be a gNB or TRP or TP in a 5G system, or one or a group (including multiple antenna panels) of base stations in a 5G system. The network device may also be a network node constituting the gNB or TP, such as a BBU, or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. Furthermore, the gNB may also comprise active antenna units (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, and implement the functions of a radio link control (radio link control, RLC), medium access control (media access control, MAC) and physical layer (PHY). The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer eventually becomes information of the PHY layer or is converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by DUs or by DUs and AAUs. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node.

Optionally, in the embodiment of the present application, the network device and the terminal device may communicate through a licensed spectrum, may also communicate through an unlicensed spectrum, or may communicate simultaneously through a licensed spectrum and an unlicensed spectrum. The network device and the terminal device may communicate with each other through a frequency spectrum of 6 gigahertz (GHz) or less, may communicate through a frequency spectrum of 6GHz or more, and may communicate using a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more at the same time. The embodiment of the application does not limit the frequency spectrum resources used between the network equipment and the terminal equipment.

Alternatively, the terminal device or the network device in the embodiment of the present application may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scene of the terminal equipment or the network equipment.

Optionally, in an embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided by the embodiment of the present application, as long as the communication can be performed by the method provided according to the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, and for example, the execution body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call the program and execute the program.

In other words, the related functions of the terminal device or the network device in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices together, or may be implemented by one or more functional modules in one device, which is not specifically limited in the embodiment of the present application. It will be appreciated that the above described functionality may be either a network element in a hardware device, or a software functionality running on dedicated hardware, or a combination of hardware and software, or a virtualized functionality instantiated on a platform (e.g., a cloud platform).

For example, the functions associated with the terminal device or the network device in the embodiments of the present application may be implemented by the terminal device/network device 300 in fig. 2. Fig. 2 is a schematic structural diagram of a terminal device/network device 300 according to an embodiment of the present application. The terminal device/network device 300 comprises one or more processors 301, 307, a communication line 302, and at least one communication interface (illustrated in fig. 2 by way of example only as comprising communication interface 304). Optionally, a memory 303 may also be included.

The processor 301 may be a CPU, microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication line 302 may include a passageway for connecting between the various components.

The communication interface 304, which may be a transceiver module, is used to communicate with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc. For example, the transceiver module may be a device such as a transceiver, or the like. Alternatively, the communication interface 304 may be a transceiver circuit located in the processor 301, so as to implement signal input and signal output of the processor.

The memory 303 may be a device having a memory function. For example, but not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be stand alone and be coupled to the processor via communication line 302. The memory may also be integrated with the processor.

The memory 303 is used for storing computer-executable instructions for executing the inventive arrangements, and is controlled by the processors 301, 307 for execution. The processors 301 and 307 are configured to execute computer-executable instructions stored in the memory 303, thereby implementing the semi-static scheduling resource allocation method/semi-static scheduling method provided in the embodiment of the present application.

Alternatively, in the embodiment of the present application, the processor 301, 307 may execute the functions related to the processing in the semi-static scheduling resource allocation method/semi-static scheduling method provided in the embodiment of the present application, and the communication interface 304 is responsible for communicating with other devices or communication networks, which is not limited in particular in the embodiment of the present application.

Computer-executable instructions in embodiments of the application may also be referred to as application code, and embodiments of the application are not limited in this regard.

In a specific implementation, as an embodiment, the processors 301, 307 may each include one or more CPUs, for example in fig. 2, the processor 301 includes CPU0 and CPU1, and the processor 307 includes CPU0 and CPU1.

In a specific implementation, as an embodiment, the terminal device/network device 300 may include multiple processors, such as processor 301 and processor 307 in fig. 2. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In a specific implementation, as an embodiment, the terminal device/network device 300 may further include an output device 305 and an input device 306. The output device 305 communicates with the processor 301 and may display information in a variety of ways.

The terminal device/network device 300 may be a general-purpose device or a special-purpose device. For example, the terminal device/network device 300 may be a desktop, laptop, web server, palm top (personal digital assistant, PDA), mobile handset, tablet, wireless terminal, embedded device, or device having a similar structure as in fig. 2. The embodiment of the present application does not limit the type of terminal device/network device 300.

The application provides a semi-static scheduling resource allocation method, wherein a terminal device receives first information sent by a network device, the first information is used for carrying out semi-static scheduling resource allocation on a first group of terminal devices, and the first information is used for indicating a period P of a frequency domain resource and a first starting time O1; and the terminal equipment receives the data of the first MBS transmitted by the network equipment at a first moment T1 by using the frequency domain resource, wherein the first moment T1 satisfies T1 = O1+ NP, and N is a positive integer. The network device performs semi-persistent scheduling resource allocation for a group of terminal devices, so that SPS resource allocation for MBS service can be realized with lower signaling overhead.

It should be noted that, in the following embodiments of the present application, a name of a message between each network element or a name of each parameter in a message is only an example, and in specific implementations, other names may also be used, which is not limited in particular in the embodiments of the present application.

The method for configuring semi-persistent scheduling resources according to the embodiment of the present application will be specifically described below with reference to fig. 1 to 8.

Fig. 3 is a schematic flow chart of a semi-static scheduling resource allocation method according to an embodiment of the present application. The network device 100 performs semi-static scheduling resource allocation on a first group of terminal devices 201, where the first group of terminal devices 201 includes X1 to Xn terminal devices 200. Illustratively, the method may include:

s101, the network device sends first information to the first group of terminal devices, where the first information is used to indicate a period (periodicity) P of the frequency domain resource and a first starting time O1. Accordingly, any one of the terminal devices 201 of the first group receives the first information.

In this embodiment, the network device schedules the first group of terminal devices through SPS, and sends MBS data to the first group of terminals. Thus, the network device needs to first configure SPS resources to the first set of terminal devices. For a certain MBS service, if the network device configures SPS resources, terminal devices interested in the MBS service or receiving the MBS service may receive MBS data through the SPS resources. The MBS service may be a broadcast (broadcast) service or a multicast/multicast (multicast) service.

The network device configures the unified SPS frequency domain resource and the starting time of the SPS frequency domain resource for the first group of terminal devices through the first information. Alternatively, the starting time may be a time indicated by the first information at which the SPS frequency domain resource of the first group of terminal devices is activated, and the starting time may also be a time calculated according to the reference time indicated by the first information at which the SPS frequency domain resource of the first terminal device is activated. The first group of terminal devices includes X1 to Xn terminal devices. This first information may be implemented in a variety of ways, each of which is described below:

implementation a, the first information includes radio resource control (radio resource control, RRC) information and downlink control information (downlink control information, DCI). The RRC information includes a period P of SPS frequency domain resources. A periodic set of SPS resources configured by RRC information is shown in fig. 4.

In addition, the RRC information may further include a configured hybrid automatic repeat request (hybrid automatic repeat request, HARQ) process number (number of configured HARQ processes for SPS DL) for SPS downlink, HARQ resources (HARQ resource for PUCCH for DL SPS) for a physical uplink control channel (physical uplink control channel, PUCCH) for downlink SPS, and the like. In another implementation, the RRC information may be replaced by a system information block (system information block, SIB), or MBS control/configuration information (information sent by a logical channel of MBS control/configuration information (e.g., multimedia broadcast multicast service control channel (MBMS control channel, MCCH) transmission), single cell multimedia broadcast multicast service control channel (single cell-MBMS control channel, SC-MCCH)), etc., a medium access control unit (media access control control element, MAC CE), etc., without limitation.

When the network device is to activate SPS resources for some or all of the first set of terminal devices, the network device is to send SPS resources to the first set of terminal devicesThe terminal device or devices, respectively, transmit DCI including a first start time O1 of SPS frequency domain resources (i.e., the time domain position of the first activated SPS resource). The first start time O1 may comprise a start system frame number SFN _{start time} Slot of starting time _{start time} Symbol of start time _{start time} The application is not limited.

Since the SPS resources configured by the RRC information are used to schedule MBS data for the first group of terminal equipments, for DCI activating the SPS resources for the first time, the group of terminal equipments may scramble the DCI using a group-based radio network temporary identifier (group-based radio network temporary identifier), i.e. the group-based radio network temporary identifier is used to scramble the DCI activating the first group of terminal equipments. Optionally, the group-based radio network temporary identifier may be a radio network temporary identifier (radio network temporary identifier, RNTI) used for MBS dynamic scheduling, such as a group radio network temporary identifier (group radio network temporary identifier, G-RNTI), or may be a RNTI used only for semi-persistent scheduling, without limitation. The following description will take a group-based radio network temporary identity as an example of a G-RNTI. Therefore, each terminal device in the first group of terminal devices monitors the DCI scrambled by the G-RNTI to activate SPS resources.

For DCI that first activates SPS resources, the DCI may also be scrambled with a terminal device specific (UE specific) RNTI. Alternatively, the terminal device-specific RNTI may be, for example, an RNTI only for semi-persistent scheduling, such as a configured scheduling radio network temporary identity (configured scheduling RNTI, CS-RNTI), a semi-persistent scheduling radio network temporary identity (semi-persistent scheduling RNTI, SPS-RNTI), or an RNTI also for dynamic scheduling, such as a cell radio network temporary identity (cell RNTI, C-RNTI), so that each terminal device in the first group of terminal devices listens to DCI scrambled by the terminal device-specific RNTI for activation of SPS resources. It can be understood that the RNTI of the terminal device level may be used for dynamic scheduling of other services of the terminal device, or may be used only for SPS scheduling of the MBS service.

In implementation B, the first information is RRC information. The RRC information includes at least one of: period P of the frequency domain resource, reference time. The reference time may be a time of a first SPS resource configured by the network device. Alternatively, the reference time may include a system frame number (system frame number, SFN), a slot number, a symbol number, and an offset (offset), which is not limited by the present application. A series of SPS resources may be determined based on the reference time and the period P of the frequency domain resources. In addition, the RRC information may further include configured HARQ process numbers for SPS downlink, HARQ resources for PUCCH for downlink SPS, and the like.

Implementation C, the first information is MAC CE. The MAC CE is carried on a physical downlink shared channel (physical downlink shared channel, PDSCH), which itself needs to be scheduled by DCI transmitted on the PDCCH. In this implementation C, SPS resources are configured by the MAC CE, and use of SPS resources is activated or deactivated. Specifically, the MAC CE includes at least one of the following information: period P of the frequency domain resource, reference time. The reference time may be a time of a first SPS resource configured by the network device. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. A series of SPS resources may be determined based on the reference time and the period P of the frequency domain resources. In addition, the MAC CE may further include configured HARQ process numbers for SPS downlink, HARQ resources for PUCCH for downlink SPS, and the like.

Since the SPS resources configured by the MAC CE are used to schedule MBS data for the first group of terminal devices, for the MAC CE that first activates the SPS resources, the group of terminal devices may schedule the MAC CE using DCI scrambled based on the group RNTI. Optionally, the group-based radio network temporary identifier may be an RNTI used for MBS dynamic scheduling, such as G-RNTI, or may be an RNTI used only for semi-persistent scheduling, without limitation. The following description will take a group-based radio network temporary identity as an example of a G-RNTI. Thus, each terminal device in the first group of terminal devices monitors the G-RNTI scrambled DCI, receives the MAC CE, acquires the configuration of SPS resources, and activates or starts to use the SPS resources to receive MBS service data. It can be appreciated that the G-RNTI may also be used for dynamic scheduling of the MBS service, or may be used only for SPS scheduling of the MBS service.

The DCI schedule may also be scrambled with a terminal device specific RNTI. Alternatively, the terminal equipment-specific RNTI may be, for example, an RNTI only for semi-persistent scheduling, such as CS-RNTI, SPS-RNTI. But also RNTIs for dynamic scheduling, such as C-RNTIs. Thus, each terminal device in the first group of terminal devices monitors the DCI scrambled by the RNTI dedicated to the terminal device, receives the MAC CE, acquires the configuration of the SPS resources, and activates or starts to use the SPS resources to receive MBS service data. It can be understood that the RNTI dedicated to the terminal device may be used for dynamic scheduling of other services of the terminal device, or may be used only for SPS scheduling of the MBS service.

In implementation D, the first information is SIB and/or MBS control/configuration information (e.g. information sent by a logical channel of MBS control/configuration information (such as MCCH, SC-MCCH). SIB can be related to MBS, such as SIB for carrying MBS service configuration/control information. The first information comprises at least one of period P of frequency domain resource, reference time, wherein the concept of reference time is the same as the description above. Furthermore, the first information can also comprise configured HARQ process number for SPS downlink, HARQ resource for PUCCH of downlink SPS, etc.

For example, the SPS resources configured above are all used for new transmission of data. If the terminal device fails to decode the data packet, a non-acknowledgement (NACK) is sent to the network device, which schedules retransmission of the data packet for this terminal device. The retransmission adopts a dynamic scheduling mode, but DCI for scheduling the retransmission of the data packet still adopts CS-RNTI/SPS-RNTI scrambling under the condition of SPS activation. The terminal equipment decodes the newly received data packet, and if the decoding is successful, sends a success response (ACK) to the network; if not, the network device continues to schedule retransmission of the data packet for the terminal device until the terminal device returns an ACK, or the timer times out, or the network device schedules new transmission of other data packets for the terminal device on the same HARQ process, or the next SPS resource using the same HARQ process arrives, etc.

S102, at a first time T1, transmitting data of a first MBS to the group of terminal equipment by using the frequency domain resource, wherein the first time T1 satisfies T1=O1+NP, and N is a positive integer. Accordingly, any one of the first group of terminal apparatuses 201 receives the data of the first MBS.

Each terminal device in the first group of terminal devices receives the first information, so that each terminal device in the group of terminal devices can determine the same first time T1, and monitor MBS data sent by the network device at the first time T1.

For implementation a above, after the terminal device receives and successfully decodes the DCI for activating the SPS resource, it determines that the DCI is for activating the SPS resource or for activating a certain SPS resource (assuming that the network device configures multiple sets of SPS resources for the terminal device). The network device sends the MBS data to a group of terminal devices using the frequency domain resources at a first time T1, where the first time T1 satisfies o1+np, N is a positive integer, and the terminal devices receive the MBS data at the frequency domain resources at the first time T1. The granularity of O1 and P may be the same, and may be optionally at the system frame level, or at the slot level, or at the symbol level, or may be different, for example, O1 is a slot in a system frame, and P is a unit of system frame (i.e., P system frames). Specifically, the DCI may include a system frame number SFN at a start time _{start time} And/or a slot of a start time _{start time} And/or the symbol of the start time _{start time} . Then O1 is the pass through SFN _{start time} And/or a slot of a starting time _{start time} And/or the symbol of the start time _{start time} The determined moment. Optionally, the period P of the SPS frequency domain resource scales to be consistent with the smallest granularity of the parameters that determine O1. Such as O1 over SFN _{start time} And a slot at the start time _{start time} Determining that if the configuration of the period of the frequency domain resource is greater than slotThe period of the frequency domain resource may be scaled to a slot level. The period of the frequency domain resource is configured as SFN granularity

P=numberofslotsperframe.

Wherein numberOfSlotsPerFrame is the number of slots in each frame.

The following DCI includes the system frame number SFN of the starting time _{start time} And a slot at the start time _{start time} For illustration, the period P of SPS frequency domain resources is periodicity in the following equation: the SFN of the nth frequency domain resource is calculated according to equation 1 and the time slots (slot number in the frame) in the SFN are as follows:

(numberOfSlotsPerFrame×SFN+slot number in the frame)＝[(numberOfSlotsPerFrame×SFN _{start time} +slot _{start time} )+N×periodicity×numberOfSlotsPerFrame/10]modulo(1024×numberOfSlotsPerFrame)

… equation 1

The terminal device receives MBS data at the calculated SFN and slot number (slot number in the frame) of each frequency domain resource. For implementation B above, the RRC information includes at least one of: period P of the frequency domain resource, reference time. The reference time may be the time of the first SPS resource configured by the network device, or may be another time. Alternatively, the reference time may include a system frame number SFN, a slot (slot) number, a symbol (symbol) number, and an offset (offset), without limitation. The terminal device, upon receiving the RRC message, may determine a series of SPS resources according to the reference time and the period P of the frequency domain resources. The terminal device may start receiving MBS data from the first available frequency domain resource (optionally, the first starting time O1). It may be appreciated that the first available frequency domain resource is one of a plurality of frequency domain resources, and may be the first available frequency domain resource after the terminal device determines the time of the frequency domain resource.

The configuration of the reference time is described below as an example of SFN and slot, or the reference time is determined by the configured SFN and slot. One possible way is to calculate the SFN of the nth frequency domain resource and the time slots (slot number in the frame) in the SFN according to equation 2 as follows:

(numberOfSlotsPerFrame×SFN+slot number in the frame)＝[(numberOfSlotsPerFrame×SFN+offset+slot)+N×periodicity×numberOfSlotsPerFrame/10]modulo(1024×numberOfSlotsPerFrame)

… equation 2

Wherein slot number in the frame is slot, and numberOfSlotsPerFrame is the number of slots in each frame. Here, the reference time is determined by numberofslotsperframe×sfn+offset+slot. For example, the reference time is the time of the first SPS frequency domain resource, and then the time domain position of the series of SPS frequency domain resources may be determined according to equation 2.

The offset may be SFN or slot granularity, or symbol granularity, and the value thereof may be configured to be 0. Alternatively, the offset may be default.

The terminal device determines the time of each frequency domain resource using the content of the received RRC information and may start receiving MBS data with a certain available frequency domain resource (e.g., the first available frequency domain resource).

For implementation C above, the MAC CE includes at least one of the following information: the period P of the frequency domain resource, the reference time, the meaning of the reference time may refer to the description above, and after the terminal device receives the MAC CE, a series of SPS resources may be determined according to the reference time and the period P of the frequency domain resource. The terminal device may start receiving MBS data from the first available frequency domain resource (optionally, the first starting time O1). It may be understood that the first available frequency domain resource is one of a plurality of frequency domain resources, and may be the first available frequency domain resource after the terminal device determines the time of the frequency domain resource. The terminal device may determine a time of each frequency domain resource using the content of the received MAC CE and may receive MBS data from the first available frequency domain resource.

For implementation D above, the broadcast information includes at least one of the following: the period P of the frequency domain resource, the reference time, the meaning of the reference time may refer to the description above, and after receiving the broadcast information, the terminal device may determine a series of SPS resources according to the reference time and the period P of the frequency domain resource. The terminal device may start receiving MBS data from the first available frequency domain resource (optionally, the first starting time O1). It may be understood that the first available frequency domain resource is one of a plurality of frequency domain resources, and may be the first available frequency domain resource after the terminal device determines the time of the frequency domain resource. The terminal device may determine a time of each frequency domain resource using the content of the received broadcast information and may receive MBS data from the first available frequency domain resource.

According to the semi-persistent scheduling resource allocation method provided by the embodiment of the application, the network equipment performs the semi-persistent scheduling resource allocation uniformly for a group of terminal equipment, so that the SPS resource allocation of MBS service can be realized with lower signaling overhead.

For SPS configuration of unicast traffic, the SPS resources configured may be a set of periodic SPS resources as shown in fig. 4.

The network device activates SPS resources of the unicast service by sending DCI, wherein the DCI comprises frequency domain resources of SPS and system frame number SFN of starting time of time resources _{start time} And a slot at the start time _{start time} . Thus, the UE can determine the period of SPS resource and SFN _{start time} 、slot _{start time} The time domain resource SFN of the nth SPS and the time slots in the SFN are calculated by equation 1 (slot number in the frame).

If the UE successfully activates SPS resources, i.e., the UE receives and successfully decodes DCI (carried on a physical downlink control channel (physical downlink control channel, PDCCH)) activating SPS scrambled by CS-RNTI (used in NR)/SPS-RNTI (used in LTE), it starts to receive data using the periodic SPS resources calculated by equation 1 above. If the UE successfully receives the SPS transmitted data, sending a success response (ACK) to the network device; if the UE fails to successfully decode the data transmitted on the SPS resource, a failure response (NACK) is sent to the network device. The network can judge the UE is through ACK/NACKWhether SPS resources have been activated. If the network does not receive the ACK/NACK for the UE, meaning that the UE did not receive data using SPS resources, the DCI is retransmitted to the UE for activating SPS resources. As shown in fig. 5, when the network device retransmits DCI to this UE, the SFN indicated in the DCI _{start time} ，slot _{start time} The time domain resources of the reactivated SPS may be determined by the network device to be inconsistent with the time domain resources of the SPS that was first unsuccessfully activated.

By adopting the scheme that the network equipment performs unified configuration of SPS resources for a group of terminal equipment receiving the same MBS service, however, if one or some UE in one terminal equipment misses or does not successfully decode DCI activating the SPS resources, some data transmitted on the SPS resources can be missed, packet loss is caused, and the service quality of the UE is reduced; if the cell to which the group of terminal devices belongs has already started scheduling MBS data on SPS resources, if there is a UE that switches to this cell through a handover procedure, or if a UE in the cell that is interested in starting the MBS service wants to receive MBS data, these UEs are collectively referred to as new UEs, and if these UEs do not know the configuration and activation of SPS resources of this cell, then MBS data scheduled through SPS cannot be received. Thus, how do the network device uniformly configure SPS resources for a group of terminal devices while considering the above-mentioned non-activated UEs or newly-entered UEs?

As shown in fig. 6, a flow chart of another semi-persistent scheduling resource allocation method according to an embodiment of the present application is shown, where the network device 100 performs semi-persistent scheduling resource allocation on a first group of terminal devices 201 and a second group of terminal devices 202, where the first group of terminal devices 201 includes X1 to Xn terminal devices, and is some terminal devices that are activated when an activation command is sent for the first time by the network device. The second group of terminal devices 202 includes Y1-Ym terminal devices, which are not activated due to the fact that the activation command sent by the network device for the first time is not received, and/or are new terminal devices. The network device 100 may also deactivate frequency domain resources for a third set of terminal devices 203, which third set of terminal devices 203 may be the first set of terminal devices 201 and the second set of terminal devices 202 described above, or may include more activated UEs. Illustratively, the method may include:

S201, the network device sends first information to the first group of terminal devices, where the first information is used to indicate a period P of the frequency domain resource and a first starting time O1. Accordingly, any one of the first set of terminal devices 402 receives the first information.

A specific implementation of this step may refer to step S101 of the embodiment shown in fig. 3.

S202, at a first time T1, transmitting data of a first multicast broadcast service MBS to the group of terminal equipment by using the frequency domain resource, wherein the first time T1 satisfies O1+NP, and N is a positive integer. Accordingly, any one of the first group of terminal apparatuses 402 receives the data of the first MBS.

A specific implementation of this step may refer to step S102 of the embodiment shown in fig. 3.

And S203, the network equipment sends second information to a second group of terminal equipment, wherein the second information is used for indicating a second starting moment O2 of the frequency domain resource, O2 and O1 meet the condition that O2=O1+MP, and M is an integer greater than or equal to 0. Accordingly, any one of the terminal devices in the second group of terminal devices receives the second information.

The network device may retransmit the second information for one or a group of terminal devices that were not activated and/or newly entered due to not receiving the first activation command sent by the network device. The second information indicates similar content to the first information, and is used for indicating a second starting time O2 of the frequency domain resource, where O2 and O1 satisfy o2=o1+mp, and M is an integer greater than or equal to 0. I.e. the network device instructs the second group of terminal devices to listen for MBS data on M SPS resources after O1. The reactivated SPS resources are aligned in time sequence with the SPS resources that have been activated.

Similar to the first information, the second information may also have a variety of implementations:

in implementation E, if the first information includes RRC information and DCI, the RRC information includes a period P of the frequency domain resource. A second group of terminal devices may have received the RRC information but not the DCI activating the frequency domain resources, a second group of terminalsThe end device is not activated SPS resources. The network device sends second information, which may be DCI, to the second set of terminal devices. The DCI includes a second start time O2 of SPS frequency domain resources. As shown in fig. 7, the first start time O1 at which the first group of terminal devices is activated comprises the system frame number SFN of the start time _{start time1} Slot of starting time _start _tim1e Symbol of start time _{start time} The method is not limited; the 1 st to 3 rd SPS resources of the second group of terminal devices are not activated, the second group of terminal devices are not receiving MBS data on these 3 SPS resources, the second group of terminal devices are activated at a second starting time O2, which may comprise a system frame number SFN of the starting time _{start tim2} Slot of starting time _{start time2} Symbol of start time _{start time2} The method is not limited; further, there may be a part of the terminal devices that are not activated or newly joined at the start time O2, for example, the 1 st to 6 th SPS resources of the part of the terminal devices are not activated, the part of the terminal devices do not receive MBS data on the 6 SPS resources, then the part of the terminal devices may be activated at the third start time O3, and the start time O3 may include the system frame number SFN of the start time _start _tim3 Slot of starting time _{start time3} Symbol of start time _{start time3} And is not limited. The starting instant O3 is still contained in the DCI. It can be seen that the DCI transmitted in multiple activations points to resource locations in the original SPS resource pattern, i.e., the reactivated SPS resources are aligned in time sequence with the already activated SPS resources. Otherwise, when the second group of terminal devices is re-activated, the second group of terminal devices may be caused to be different from the first group of terminal devices in terms of their interpretation of the time domain location of SPS resources.

Since a group of terminal equipments are reactivated to schedule the same MBS data, for DCI reactivating SPS resources, the group of terminal equipments may use a group-based G-RNTI to scramble the DCI, i.e. a group-based radio network temporary identity is used to scramble DCI reactivating a second group of terminal equipments. Optionally, the group-based radio network temporary identifier may be an RNTI used for MBS dynamic scheduling, such as G-RNTI, or may be an RNTI used only for semi-persistent scheduling, without limitation. The following description will take a group-based radio network temporary identity as an example of a G-RNTI. Thus, each terminal device in the second group of terminal devices monitors the DCI scrambled by the G-RNTI, and activates SPS resources. It can be appreciated that the G-RNTI may also be used for dynamic scheduling of the MBS service, or may be used only for SPS scheduling of the MBS service.

Since the network device knows which terminal devices of the terminal devices receiving the MBS data have not been successfully activated, or which terminal devices are new terminal devices, the DCI for reactivating the SPS resources may also be scrambled with a terminal device specific RNTI. The terminal equipment-specific RNTI may be, for example, an RNTI only for semi-persistent scheduling, such as CS-RNTI, SPS-RNTI, or an RNTI also for dynamic scheduling, such as C-RNTI. Thus, each terminal device in the second group of terminal devices monitors the DCI scrambled by the RNTI dedicated to the terminal device, and activates SPS resources. It can be understood that the RNTI dedicated to the terminal device may be used for dynamic scheduling of other services of the terminal device, or may be used only for SPS scheduling of the MBS service.

Implementation F, the second information is RRC information. The RRC information includes at least one of: period P of the frequency domain resource, reference time. The reference time may be a time of a first SPS resource configured by the network device. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. A series of SPS resources may be determined based on the reference time and the period P of the frequency domain resources. In addition, the RRC information may further include configured HARQ process numbers for SPS downlink, HARQ resources for PUCCH for downlink SPS, and the like.

Implementation G, the second information is MAC CE. The MAC CE is carried on the PDSCH, which itself needs to schedule DCI transmitted on the PDCCH. In this implementation, SPS resources are configured by the MAC CE and use of SPS resources is re-activated. Specifically, the MAC CE includes at least one of the following information: period P of the frequency domain resource, reference time. The reference time may be a time of a first SPS resource configured by the network device. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. A series of SPS resources may be determined based on the reference time and the period P of the frequency domain resources. In addition, the second information may further include a configured HARQ process number for SPS downlink, a HARQ resource for PUCCH for downlink SPS, a data packet that is not received by the second group of terminal devices on the SPS resource before the second time T2, and so on. As shown in fig. 8, UE2 is not activated by the MAC CE of scheduling SPS1, and thus SPS1 is not received; UE2 is activated by the MAC CE of scheduling SPS2 so that data packets on SPS2 and other SPS resources thereafter may be received, wherein the MAC CE of scheduling SPS2 may include data packets on SPS 1. Similarly, UE3 is not activated by MAC CEs that schedule SPS1 and SPS2, and thus SPS1 and SPS2 are not received; UE3 is activated by the MAC CE of scheduling SPS3 so that data packets on SPS3 and other SPS resources thereafter may be received, where the MAC CE of scheduling SPS3 may include data packets on SPS1 and SPS 2.

Since the SPS resources configured by the MAC CE are used to schedule MBS data for the second group of terminal devices, for the MAC CE that reactivates the SPS resources, the group of terminal devices may each schedule the MAC CE using DCI scrambled based on the group RNTI. Optionally, the group-based radio network temporary identifier may be an RNTI used for MBS dynamic scheduling, such as G-RNTI, or may be an RNTI used only for semi-persistent scheduling, without limitation. The following description will take a group-based radio network temporary identity as an example of a G-RNTI. Thus, each terminal device in the second group of terminal devices listens to the G-RNTI scrambled DCI, receives the MAC CE, acquires the configuration of SPS resources, and activates or starts to use SPS resources. It can be appreciated that the G-RNTI may also be used for dynamic scheduling of the MBS service, or may be used only for SPS scheduling of the MBS service. The MAC CEs that are transmitted are activated again or multiple times are each directed to a resource location in the original SPS resource pattern, i.e., the reactivated SPS resources are aligned in time sequence with the already activated SPS resources.

The DCI scrambled with the terminal device-specific RNTI may also be employed. Alternatively, the terminal equipment-specific RNTI may be, for example, only an RNTI for semi-persistent scheduling, such as CS-RNTI, SPS-RNTI. But also RNTIs for dynamic scheduling, such as C-RNTIs. Thus, each terminal device in the second group of terminal devices monitors the DCI scrambled by the RNTI dedicated to the terminal device, receives the MAC CE, acquires the configuration of the SPS resources, and activates or starts to use the SPS resources to receive MBS service data. It can be understood that the RNTI dedicated to the terminal device may be used for dynamic scheduling of other services of the terminal device, or may be used only for SPS scheduling of the MBS service.

The second information may be SIB related to MBS, such as SIB for carrying MBS service configuration/control information, the second information may include at least one of period P of frequency domain resource, reference time, wherein the concept of reference time is the same as the above description.

S204, the network equipment sends the data of the first MBS to the second group of terminal equipment by using the frequency domain resource at a second time T2, wherein the second time T2 satisfies O2+KP, and K is a positive integer. Accordingly, any one of the second group of terminal devices receives the data of the first MBS.

Each terminal device in the second group of terminal devices receives the second information, and the second starting time O2 configured by the network device for each terminal device is the same, so that each terminal device in the group of terminal devices can determine the same second time T2, and monitor MBS data sent by the network device at the second time T2. And the frequency domain resource at the second time T2 is aligned with the frequency domain resource at the first time T1, so that the network device can send the same MBS data to the plurality of terminal devices (the first group of terminal devices and the second group of terminal devices) on the same periodic SPS resource.

For implementation E above, each terminal device in the second set of terminal devices receives and formsAfter the DCI for activating an SPS resource is successfully decoded, it is determined that the DCI is for reactivating a certain SPS resource (assuming that the network device configures multiple sets of SPS resources for the terminal device, the DCI may further include an index (index) of the SPS resource group). The network device sends the MBS data to the second group of terminal devices using the frequency domain resources at a second time T2, where the second time T2 satisfies o2+kp, and K is a positive integer, and the second group of terminal devices receives the MBS data at the frequency domain resources at the second time T2. Specifically, the DCI includes a system frame number SFN of start time O2 _{start time} And/or a slot of a start time _{start time} And/or the symbol of the start time _{start time} The SFN of the kth frequency domain resource, and/or the time slots (slot number in the frame) in the SFN, and/or the symbols in the time slots may be calculated according to equation 1.

When the network device sends the G-RNTI scrambled reactivation command to the second group of terminal devices, the first group of terminal devices may also monitor the reactivation command with the same G-RNTI and monitor that the reactivation command is for activating the same group of SPS resources (the reactivation command includes an index of a group of SPS resources), which can be processed since the first group of terminal devices has been activated at the first starting time O1. Or after receiving the reactivation command, based on the system frame number SFN of the starting time O2 indicated by the reactivation command _{start time} And/or a slot of a starting time _start _time And/or the symbol of the start time _{start time} A series of moments at which MBS data is received on SPS resources are recalculated according to equation 1. The recalculated frequency domain resource at the starting time is aligned with the frequency domain resource at the first time T1. The terminal device receives MBS data in the calculated SFN of each frequency domain resource and/or time slots in the SFN and/or symbols in each time slot.

For implementation F above, the RRC information includes at least one of: period P of the frequency domain resource, reference time. The reference time may be the time of the first SPS resource configured by the network device, or may be another time. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. The terminal device, upon receiving the RRC message, may determine a series of SPS resources according to the reference time and the period P of the frequency domain resources. The terminal device may start receiving MBS data from the next available frequency domain resource (the second starting time O2) after receiving the RRC information (the terminal device misses data on several frequency domain resources before receiving the RRC information). It may be appreciated that the next available frequency domain resource is one of a plurality of frequency domain resources, and may be the first available frequency domain resource after the time when the terminal device receives the RRC information.

The configuration of the reference time is described below as an example of SFN and slot, or the reference time is determined by the configured SFN and slot. One possible way may be to calculate the SFN of the nth frequency domain resource and the time slots in the SFN according to equation 2 (slot number in the frame). The terminal device determines the time of each frequency domain resource using the content of the received RRC information, and may start to receive MBS data from a certain available frequency domain resource. For implementation G above, the MAC CE includes at least one of the following information: period P of the frequency domain resource, reference time. The reference time may be the time of the first SPS resource configured by the network device, or may be another time. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. The terminal device, upon receiving the MAC CE, may determine a series of SPS resources according to the reference time and the period P of the frequency domain resources. The terminal device may start receiving MBS data from the next available frequency domain resource (the second starting time O2) after receiving the MAC CE (the terminal device misses data on several frequency domain resources before receiving the MAC CE, and the missed received data may be included in the MAC CE). It may be appreciated that the next available frequency domain resource is one of a plurality of frequency domain resources, which may be the first available frequency domain resource after the moment when the terminal device receives the MAC CE.

The configuration of the reference time is described below as an example of SFN and slot, or the reference time is determined by the configured SFN and slot. One possible way may be to calculate the SFN of the nth frequency domain resource and the time slots in the SFN according to equation 2 (slot number in the frame). The terminal device determines the time of each frequency domain resource using the received contents of the MAC CE, and may start to receive MBS data from a certain available frequency domain resource.

For implementation H above, the broadcast information includes at least one of the following: period P of the frequency domain resource, reference time. The reference time may be the time of the first SPS resource configured by the network device, or may be another time. Alternatively, the reference time may include, without limitation, a system frame number SFN, a slot (slot) number, and a symbol (symbol) number. The terminal device, upon receiving the broadcast information, may determine a series of SPS resources based on the reference time and the period P of the frequency domain resources. The terminal device may start receiving MBS data from the next available frequency domain resource (second starting time O2) after receiving the broadcast information (the terminal device misses data on several frequency domain resources before receiving the broadcast information). It may be appreciated that the next available frequency domain resource is one of a plurality of frequency domain resources, and may be the first available frequency domain resource after the time when the terminal device receives the broadcast information.

The configuration of the reference time is described below as an example of SFN and slot, or the reference time is determined by the configured SFN and slot. One possible way may be to calculate the SFN of the nth frequency domain resource and the time slots in the SFN according to equation 2 (slot number in the frame). The terminal device determines the time of each frequency domain resource using the content of the received broadcast information, and may start to receive MBS data from a certain available frequency domain resource.

And S205, the network equipment transmits third information to a third group of terminal equipment, wherein the third information is used for deactivating the frequency domain resources. Accordingly, any one of the terminal devices in the third group of terminal devices receives the third information.

When the network device wants to deactivate/release the SPS resources of the MBS service, for example, when there is no data of the MBS service at the end of the service for a period of time, and the core network releases the protocol data unit (protocol data unit, PDU)/MBS session of the MBS service, the network device may send third information to a third group of terminal devices that use the SPS resources to receive the MBS service, where the third information is used to indicate to deactivate/release the SPS resources of the MBS service, which may be referred to as a deactivation command.

The third information may be the DCI, RRC information, MAC CE, broadcast information, and the like. The scrambling manner of the third information is the same as above, and a G-RNTI or a terminal device-level RNTI may be used.

And S206, any terminal equipment in the third group of terminal equipment sends feedback information to the network equipment. Accordingly, the network device receives feedback information of at least one terminal device of the third group of terminal devices.

And if any one of the terminal devices in the third group of terminal devices successfully receives and decodes the third information, sending feedback information to the network device, wherein the feedback information is used for indicating that the third information is received.

S207, the network equipment does not receive feedback information of all terminal equipment in the third group of terminal equipment, and sends fourth information to the third group of terminal equipment until receiving the feedback information of all terminal equipment in the third group of terminal equipment, wherein the fourth information is used for deactivating the frequency domain resource.

If any one of the terminal devices in the third group of terminal devices does not receive or successfully decode the third information, the network device will not feed back to the network device, and the network device can determine the situation of the terminal device or the terminal devices. If the terminal devices continue to receive the MBS data according to the SPS resource configuration at this time, power consumption of the terminal devices will be caused. The network device needs to retransmit and send fourth information for these terminal devices, where the fourth information is used to instruct to deactivate or release SPS resources of the MBS service. The fourth information may also be scrambled using a group RNTI or a terminal device level RNTI. The fourth information may be the DCI, RRC information, MAC CE, broadcast information, and the like.

For example, the network device transmits the G-RNTI scrambled deactivation command again/for multiple times to deactivate or release the SPS resource, that is, the group of terminal devices all monitor the G-RNTI scrambled DCI to deactivate the SPS resource. Alternatively, for the terminal device that has deactivated/released this SPS resource, the deactivation command may not be processed by the corresponding indication information in the deactivation command, such as SPS index, etc., and no deactivation feedback is performed to the network device.

For example, since the network device knows which terminal devices did not successfully deactivate or release this SPS resource, the network device may use the terminal device level RNTI to scramble the deactivation command to activate those terminal devices that did not deactivate the SPS resource.

The network device sends the fourth information until feedback information of all terminal devices in the third group of terminal devices is received, namely, the feedback information indicates that all terminal devices in the third group of terminal devices receive the deactivation command.

S208, the network equipment releases the frequency domain resources.

After all terminal devices in the third group of terminal devices receive the deactivation command, the network device can release the SPS resource to improve the utilization rate of the SPS resource.

According to the semi-persistent scheduling resource allocation method provided by the embodiment of the application, the network equipment performs the semi-persistent scheduling resource allocation uniformly for a group of terminal equipment, so that the SPS resource allocation of MBS service can be realized with lower signaling overhead; if the terminal equipment which is not activated or the new terminal equipment exists, the network sets the semi-static scheduling resources which uniformly activate the terminal equipment, and the semi-static scheduling resources of the terminal equipment and the semi-static scheduling resources of a group of terminal equipment which are already activated are used for realizing the reliable receiving of MBS data; the network device can also deactivate the semi-static scheduling resources in a unified way for all the terminal devices, so that the deactivated semi-static scheduling resources are released, and the utilization rate of the semi-static scheduling resources is improved.

Packet-based data streams are typically bursty, and when there is no data transmission, power consumption may be reduced by turning off the receiving circuitry of the UE, thereby increasing battery life. This is the origin of discontinuous reception (discontinuous reception, DRX) mode. Discontinuous reception in connected state (connected discontinuous reception, c-DRX) is a DRX mechanism applied to radio resource control-connected (rrc_connected) UEs.

As shown in fig. 9, the basic mechanism of c-DRX is to configure a discontinuous reception cycle (DRX cycle) for a UE in rrc_connected state. The DRX cycle consists of an "awake period" (on duration) and a "discontinuous reception opportunity (Opportunity for DRX) (or sleep period). During wakeup, the UE listens for and receives PDCCH (active period); during the sleep period, the UE does not receive PDCCH data of the downlink channel to save power consumption.

However, if there is an MBS data scheduled by a subsequent network device in which the UE enters sleep without activating SPS resources during wakeup, among a set of UEs configured to receive MBS data.

In view of this, an embodiment of the present application provides a semi-persistent scheduling method, in which a terminal device receives a retransmission packet during a wakeup period in a discontinuous reception mode, extends the wakeup period by a first period, and detects an activation command during the extended wakeup period, where the activation command is used to activate a semi-persistent scheduling resource, so that the reliability of the terminal device receiving an activation command of an SPS resource can be improved.

The semi-static scheduling method provided by the embodiment of the application will be specifically described with reference to fig. 9 to 11.

As shown in fig. 10, a flow chart of a semi-static scheduling method according to an embodiment of the present application is shown, and the method includes the following steps:

S301, the terminal equipment receives a retransmission data packet in a wake-up period of a discontinuous reception mode.

The network device uniformly activates SPS resources of a group of UEs receiving a certain MBS service, the activation command employs group RNTI scrambling, and uses the group RNTI to schedule retransmission of data (i.e., the command to schedule retransmission of data employs the same group RNTI scrambling).

When SPS resources of a group of UE configured to a certain MBS service are activated by information scrambled by RNTI of a network device sending group, the group of UE has the following states:

1) Type 1 UE: successfully receiving and decoding the activation command, and successfully receiving MBS data transmitted on SPS resources, and sending ACK to network equipment;

2) Type 2 UE: the activation command is successfully received and decoded, but MBS data transmitted on SPS resources is not successfully received, NACK is sent to network equipment;

3) Type 3 UE: the activate command is not received or not successfully decoded.

Since there are UEs in the group of UEs that fail to receive the data packet, the network device uses the RNTI of the group to schedule retransmission of the data. Since UEs interested in or receiving the MBS service monitor the RNTI of the group, the following actions are performed for the above three types of UEs after receiving the retransmission packet:

1) Type 1 UE: nothing is done;

2) Type 2 UE: receiving and decoding the retransmission data packet, if successful, returning ACK, and if unsuccessful, returning NACK;

3) Type 3 UE: as shown in fig. 11, the UE may receive the retransmission packet during the awake period of the DRX mode, and may determine that the retransmission is the retransmission of the SPS by DCI (scrambling with group RNTI) scheduling the retransmission data, but the UE is not activated with SPS resources, and does not know where the time domain location of the next SPS resource is. Since the UE is configured in the DRX mode, the UE may go to sleep according to the configuration and operation of DRX. If the UE does not wake up at the time when the network device resends the SPS activation command, the activation command is still not received, and MBS data carried on SPS resources is not received. Therefore, the UE loses packets or cannot receive MBS data, and service transmission/service quality and user experience are reduced. In the example of fig. 11, the UE3 is not activated with SPS resources, but receives a Retransmission (RE) packet during wakeup, and the UE3 then goes into sleep, and neither DCI transmitted by the network device during its sleep nor SPS2, etc. are received.

S302, the terminal equipment prolongs the awakening period for a first time period.

In this embodiment, the UE extends its awake period for a period of time, such as for the first period of time. That is, no matter which timer is activated by the DRX of the UE, when DCI for scheduling SPS retransmission packets is received, the timer is extended by a first period. Alternatively, the first period of time may be at least one SPS period, or until the UE receives an activation command.

Alternatively, it may be that the network device indicates in the DCI scheduling the SPS retransmission packet that the UE will activate the command afterwards and/or that the UE does not enter the sleep state. Further, the UE may continue to operate the existing DRX mechanism after receiving the activation command.

Discontinuous reception commands (DRX commands) can currently be sent to the UE through the MAC CE, instructing the UE to enter a sleep state immediately. Alternatively, in this embodiment, the indication information may be sent to the UE through the MAC CE, so as to indicate that the UE does not enter the sleep state.

S303, the terminal device detects an activation command during the extended wakeup period, where the activation command is used to activate the semi-persistent scheduling resource.

Since the awake period is prolonged, the UE can detect an activation command of SPS resources during the prolonged awake period. With continued reference to fig. 11, the ue receives DCI transmitted by the network device during the extended wakeup period and may also receive data transmitted by the network device on SPS 2. The UE may enter a dormant state upon arrival during dormancy after being activated SPS resources. The subsequent UE may receive data on the subsequent SPS resource according to the periodicity of the SPS resource.

According to the semi-persistent scheduling method provided by the embodiment of the application, the terminal equipment receives the retransmission data packet in the wake-up period of the discontinuous reception mode, prolongs the wake-up period by a first time period, and detects the activation command in the prolonged wake-up period, wherein the activation command is used for activating the semi-persistent scheduling resource, so that the reliability of the terminal equipment for receiving the activation command of the SPS resource can be improved.

As described above, the downlink scheduling mode of the network is divided into the dynamic scheduling mode and the SPS scheduling mode, and when the UE receives downlink scheduling information, the UE descrambles DCI of different formats by using different RNTIs, and receives the information of subsequent scheduling. Different scheduling modes, corresponding DCIs may be scrambled with different RNTIs. Therefore, the UE can distinguish which scheduling mode the network schedules, accurately demodulates the downlink scheduling information and avoids the follow-up failure to reliably receive the downlink scheduling data.

In view of this, the embodiment of the present application provides a downlink scheduling scheme for MBS service, where a terminal device descrambles downlink scheduling information according to an RNTI corresponding to a determined downlink scheduling mode, thereby improving reliability of downlink scheduling.

As shown in fig. 12, a flow chart of a downlink scheduling method according to an embodiment of the present application is shown, and the method includes:

S401, the network equipment sends downlink scheduling information to the terminal equipment. Correspondingly, the terminal equipment receives the downlink scheduling information. The downlink scheduling information is used for scheduling downlink data, and the downlink scheduling adopts a first downlink scheduling mode.

The first downlink scheduling mode may be dynamic scheduling, SPS scheduling, dynamic scheduling and SPS scheduling. If the first downlink scheduling mode is dynamic scheduling, the downlink scheduling information may be DCI; if the first downlink scheduling mode is SPS scheduling, the downlink scheduling information may be DCI, RRC, MAC CE, broadcast information, etc.; if the first downlink scheduling mode is dynamic scheduling and SPS scheduling, corresponding downlink scheduling information can be sent respectively.

S402, the terminal equipment determines a first downlink scheduling mode and corresponding wireless network temporary identification descrambling downlink scheduling information and/or DCI format.

In this embodiment, different downlink scheduling modes may have corresponding RNTIs. After the UE determines the first downlink scheduling mode, the UE determines the corresponding RNTI and DCI format, and can correctly descramble the downlink scheduling information, so that the downlink scheduling data is received by using the descrambled downlink scheduling information.

The UE determines the RNTI corresponding to the first downlink scheduling mode in various manners, which are described below:

in implementation 1, if the first downlink scheduling mode is either dynamic scheduling or SPS scheduling, the network device may send an RRC to the UE, where the RRC is used to indicate that the first downlink scheduling mode is dynamic scheduling or SPS scheduling. For example, RRC includes 1 bit of information, a bit value of "0" indicates that the scheduling mode is dynamic scheduling, and a bit value of "1" indicates that the scheduling mode is SPS scheduling. Vice versa. After the UE receives the RRC, the UE acquires the bit information in the RRC, so that the indicated scheduling mode can be obtained. In this embodiment, the DCI corresponding to the first downlink scheduling mode may be scrambled with one RNTI, that is, the dynamic scheduling and SPS scheduling information (DCI) is scrambled with the same RNTI, such as G-RNTI.

In implementation 2, if the first downlink scheduling mode is any one of dynamic scheduling or SPS scheduling, the network device may indicate the first downlink scheduling mode through DCI. Alternatively, the same DCI format is used for dynamic scheduling and SPS scheduling. And the UE decodes the DCI and determines the first downlink scheduling mode to be in dynamic scheduling or SPS scheduling. For example, 1 bit of information may be included in the DCI, where the bit of information is used to indicate that the first downlink scheduling mode is dynamic scheduling or SPS scheduling. For example, a bit value of "0" indicates that the scheduling mode is dynamic scheduling, and a bit value of "1" indicates that the scheduling mode is SPS scheduling. Vice versa. The DCI may be scrambled with a G-RNTI, and the network device and the UE may negotiate in advance to scramble the DCI with the G-RNTI, which is used for dynamic scheduling or SPS scheduling. The UE receives the DCI and, after descrambling the DCI with the G-RNTI, may determine whether it is dynamic scheduling or SPS scheduling.

In implementation 3, before sending the downlink scheduling information, the network device sends SPS resource configuration information to the terminal device, and the terminal device decodes the SPS resource configuration information to determine that the downlink scheduling information is SPS resource activation, where the downlink scheduling mode is SPS scheduling mode.

In implementation 4, the network device may also determine the downlink scheduling mode by negotiating with the terminal device in advance.

In implementation 5, if the first downlink scheduling mode includes dynamic scheduling and SPS scheduling, the network device may notify, through the above 4 implementations, the downlink scheduling mode adopted by each downlink scheduling information. DCIs for dynamic scheduling and SPS scheduling are scrambled with different RNTIs, such as G-RNTI for dynamic scheduling and RNTI dedicated for semi-persistent scheduling.

According to the downlink scheduling method provided by the embodiment of the application, the terminal equipment descrambles the downlink scheduling information according to the RNTI corresponding to the determined downlink scheduling mode, so that the reliability of downlink scheduling is improved.

It will be appreciated that in the various embodiments above, the methods and/or steps implemented by the terminal device may also be implemented by a component (e.g., a chip or circuit) that may be used in the terminal device; the methods and/or steps implemented by the network device may also be implemented by components (e.g., chips or circuits) that may be used in the network device.

The scheme provided by the embodiment of the application is mainly introduced from the interaction angle among the network elements. Correspondingly, the embodiment of the application also provides the terminal equipment and the network equipment, which are used for realizing the various methods. The terminal device and the network device may be the terminal device in the above method embodiment, or an apparatus including the above terminal device, or a component usable for the terminal device; alternatively, the terminal device and the network device may be the network device in the above method embodiment, or an apparatus including the above network device, or a component that may be used in the network device. It will be appreciated that the terminal device and the network device, in order to implement the above-mentioned functions, comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional modules of the terminal equipment and the network equipment according to the embodiment of the method, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

Based on the same conception of the semi-static scheduling resource allocation method, the application also provides terminal equipment and network equipment for realizing the method.

As shown in fig. 13, a schematic structural diagram of a terminal device according to an embodiment of the present application is provided, where the terminal device 500 includes: a transceiver unit 51; wherein:

a transceiver unit 51, configured to receive first information, where the first information is used to perform semi-static scheduling resource configuration on a first group of terminal devices, and the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and

the transceiver unit 51 is further configured to receive, at a first time T1, data of the first multicast broadcast service MBS using the frequency domain resource, where T1 satisfies o1+np, and N is a positive integer.

In a possible implementation, the transceiver unit 51 is further configured to receive third information, where the third information is used to deactivate the frequency domain resource.

The specific implementation of the transceiver unit 51 described above may refer to any one of the first set of terminal devices shown in fig. 3 or the relevant description of any one of the first set of terminal devices and the second set of terminal devices shown in fig. 6.

According to the terminal equipment provided by the embodiment of the application, the terminal equipment receives the semi-persistent scheduling resource configuration which is uniformly sent by the network equipment aiming at a group of terminal equipment, so that the network equipment can realize the SPS resource configuration of MBS service with lower signaling overhead.

As shown in fig. 14, a schematic structural diagram of a network device according to an embodiment of the present application is provided, where the network device 600 includes: the transceiver unit 61 may further include a processing unit 62; wherein:

a transceiver unit 61, configured to send first information to a first group of terminal devices, where the first information is used to indicate a period P of a frequency domain resource and a first starting time O1; and

the transceiver unit 61 is further configured to send, at a first time T1, data of a first multicast broadcast service MBS to the first group of terminal devices using the frequency domain resource, where the first time T1 satisfies o1+np, and N is a positive integer.

In a possible implementation, the transceiver unit 61 is further configured to send second information to a second group of terminal devices, where the second information is used to indicate a second starting time O2 of the frequency domain resource, where O2 and O1 satisfy o2=o1+mp, and M is an integer greater than or equal to 0; and

the transceiver unit 61 is further configured to send, at a second time T2, the data of the first MBS to the second group of terminal devices using the frequency domain resource, where the second time T2 satisfies o2+kp, and K is a positive integer.

In a further possible implementation, the transceiver unit 61 is further configured to send third information to the third group of terminal devices, where the third information is used to deactivate the frequency domain resources.

In a further possible implementation, the transceiver unit 61 is further configured to receive feedback information of at least one terminal device in the third group of terminal devices; and

the transceiver unit 61 is further configured to send fourth information to the third group of terminal devices until feedback information of all terminal devices in the third group of terminal devices is received, where the fourth information is used to deactivate the frequency domain resource; and

A processing unit 62, configured to release the frequency domain resource.

Specific implementations of the transceiver unit 61 and the processing unit 62 described above may refer to the relevant description of the network device in the embodiments shown in fig. 3 or fig. 6.

According to the network equipment provided by the embodiment of the application, the network equipment performs semi-static scheduling resource allocation uniformly for a group of terminal equipment, so that SPS resource allocation of MBS service can be realized with lower signaling overhead.

Based on the same concept of the semi-static scheduling method, as shown in fig. 15, a schematic structural diagram of still another terminal device according to an embodiment of the present application is provided, where the terminal device 700 includes:

the transceiver unit 71 is configured to receive the retransmission packet during the wake-up period of the discontinuous reception mode.

The processing unit 72 is configured to extend the awake period by a first period of time.

The processing unit 72 is further configured to detect an activation command for activating the semi-persistent scheduling resource during the extended wakeup period.

The specific implementation of the transceiver unit 71 and the processing unit 72 described above may be referred to the relevant description in the embodiment shown in fig. 10.

According to the terminal equipment provided by the embodiment of the application, the terminal equipment receives the retransmission data packet in the wake-up period of the discontinuous reception mode, prolongs the wake-up period by a first time period, and detects the activation command in the prolonged wake-up period, wherein the activation command is used for activating the semi-persistent scheduling resource, so that the reliability of the terminal equipment for receiving the activation command of the SPS resource can be improved.

Fig. 16 shows a simplified schematic diagram of the structure of a terminal device. For easy understanding and convenient illustration, in fig. 16, a mobile phone is taken as an example of the terminal device. As shown in fig. 16, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminals may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is shown in fig. 16. In an actual end product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiver function may be regarded as a receiving unit and a transmitting unit (may also be collectively referred to as a transceiver unit) of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 16, the terminal device includes a transceiving unit 81 and a processing unit 82. The transceiver unit 81 may also be implemented by a receiver/transmitter (transmitter), a receiver/transmitter circuit, or the like. The processing unit 82 may also be implemented by a processor, a processing board, a processing module, a processing device, etc.

For example, in one embodiment, the transceiver unit 81 is configured to perform the functions performed by the terminal device in steps S101 and S102 of the embodiment shown in fig. 3.

For example, in yet another embodiment, the transceiver unit 81 is configured to perform the functions performed by the terminal device in steps S201 to S207 of the embodiment shown in fig. 6.

For example, in yet another embodiment, the transceiving unit 81 is used to perform steps S301 to S303 of the embodiment shown in fig. 10.

For example, in yet another embodiment, the transceiver unit 81 is configured to perform the function performed by the terminal device in step S401 of the embodiment shown in fig. 12; and the processing unit 82 is configured to execute step S402 of the embodiment shown in fig. 12.

Fig. 17 shows a simplified schematic diagram of the structure of a network device. The network device comprises a processing unit 92 and a transceiving unit 91. The processing unit 92 is mainly used for baseband processing, control of network devices, and the like. The transceiver unit 91 may include a radio frequency unit, an antenna, etc. The transceiver unit may be implemented by a receiver/transmitter (transmitter), a receiver/transmitter circuit, or the like. The processing unit 92 is typically a control center of the network device for controlling the source network device to perform the steps performed in relation to the network device in fig. 3 or fig. 6 described above. See for details the description of the relevant parts above.

The processing unit 92 may comprise one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the network devices. If there are multiple boards, the boards can be interconnected to increase processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one embodiment, the transceiver unit 91 is configured to perform the functions performed by the network device in steps S101 and S102 of the embodiment shown in fig. 3.

For example, in yet another embodiment, the transceiver unit 91 is configured to perform the functions performed by the network device in steps S201 to S207 of the embodiment shown in fig. 6; the processing unit 92 is configured to execute step S208 of the embodiment shown in fig. 6.

For example, in yet another embodiment, the transceiver unit 91 is configured to perform the function performed by the network device in step S401 of the embodiment shown in fig. 12.

The embodiment of the present application also provides a computer readable storage medium having stored therein a computer program or instructions which, when executed, implement the method in the above embodiment.

Embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above embodiments.

The embodiment of the application also provides a communication system which comprises the terminal equipment and the network equipment.

It should be noted that one or more of the above units or units may be implemented in software, hardware or a combination of both. When any of the above units or units are implemented in software, the software exists in the form of computer program instructions and is stored in a memory, a processor may be used to execute the program instructions and implement the above method flows. The processor may be built in a system on chip (SoC) or ASIC, or may be a separate semiconductor chip. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable gate array, FPGAs), programmable logic devices (programmable logic device, PLDs), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions for operation or processing.

When the above units or units are implemented in hardware, the hardware may be any one or any combination of a CPU, microprocessor, digital signal processing (digital signal processing, DSP) chip, micro control unit (microcontroller unit, MCU), artificial intelligence processor, ASIC, soC, FPGA, PLD, dedicated digital circuitry, hardware accelerator, or non-integrated discrete device, which may run the necessary software or be independent of the software to perform the above method flows.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor being coupled with the memory through the interface, the at least one processor, when running a computer program or instructions in the memory, causes the chip system to perform the method of any of the method embodiments described above. Alternatively, the chip system may be formed by a chip, or may include a chip and other discrete devices, which are not specifically limited in this embodiment of the present application.

It should be understood that in the description of the present application, "/" means that the associated objects are in a "or" relationship, unless otherwise specified, for example, a/B may represent a or B; wherein A, B may be singular or plural. Also, in the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof can be made without departing from the scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

A method for semi-static scheduling resource allocation, the method comprising:

receiving first information, wherein the first information is used for carrying out semi-static scheduling resource configuration on a first group of terminal equipment, and the first information is used for indicating a period P of frequency domain resources and a first starting time O1;

at a first time T1, receiving data of a first multicast broadcast service MBS using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer.
The method according to claim 1, wherein the method further comprises:

third information is received, the third information being used to deactivate the frequency domain resource.
The method according to claim 1 or 2, wherein the first information comprises radio resource control information and downlink control information, the downlink control information being scrambled with a group radio network temporary identity of the first group of terminal devices; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices.
A method according to any one of claims 1-3, wherein the first information comprises first radio resource control information comprising the P and first downlink control information comprising the O1.
A method according to any one of claims 1 to 3, wherein the first information is first broadcast information, the first broadcast information comprising at least one of: and P is a reference time, wherein the reference time is used for determining the O1.
A method according to any one of claims 1-3, wherein the first information is a first medium access control unit or a first radio resource control information, the first medium access control unit or the first radio resource control information comprising at least one of: and P is a reference time, wherein the reference time is used for determining the O1.
A method for semi-static scheduling resource allocation, the method comprising:

transmitting first information to a first group of terminal equipment, wherein the first information is used for indicating a period P of frequency domain resources and a first starting time O1;

at a first time T1, transmitting data of a first multicast broadcast service MBS to the first group of terminal devices using the frequency domain resource, where T1 satisfies t1=o1+np, and N is a positive integer.
The method of claim 7, wherein the method further comprises:

Transmitting second information to a second group of terminal equipment, wherein the second information is used for indicating a second starting time O2 of the frequency domain resource, O2 and O1 meet the condition that O2=O1+MP, and M is an integer greater than or equal to 0;

at a second time T2, the frequency domain resource is used to send the data of the first MBS to the second group of terminal devices, where T2 satisfies t2=o2+kp, and K is a positive integer.
The method according to claim 7 or 8, characterized in that the method further comprises:

and sending third information to the third group of terminal equipment, wherein the third information is used for deactivating the frequency domain resource.
The method according to claim 9, wherein the method further comprises:

receiving feedback information of at least one terminal device in the third group of terminal devices;

the feedback information of all the terminal devices in the third group of terminal devices is not received, fourth information is sent to the third group of terminal devices until the feedback information of all the terminal devices in the third group of terminal devices is received, and the fourth information is used for deactivating the frequency domain resource;

releasing the frequency domain resource.
The method according to any one of claims 7-10, wherein the first information comprises radio resource control information and downlink control information, the downlink control information being scrambled with a group radio network temporary identity of the first group of terminal devices; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices.
The method according to any one of claims 8-11, wherein the first information comprises first radio resource control information including the P and first downlink control information including the O1; and/or the second information includes second radio resource control information and second downlink control information, the second radio resource control information includes the P, and the second downlink control information includes the O2.
The method according to any one of claims 8 to 11, wherein the first information is first broadcast information, the first broadcast information including at least one of: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is second broadcast information, the second broadcast information including at least one of: the P, the reference time is used for determining the O2.
The method according to any of claims 8-11, wherein the first information is a first medium access control unit or a first radio resource control information, the first medium access control unit or the first radio resource control information comprising at least one of: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is a second medium access control unit or second radio resource control information, the second medium access control unit or second radio resource control information comprising at least one of the following information: the P, the reference time is used for determining the O2.
A semi-static scheduling method, the method comprising:

receiving a retransmission packet during wakeup in discontinuous reception mode;

extending the awake period for a first period of time;

an activation command is detected during the extended wakeup period, the activation command being for activating a semi-persistent scheduling resource.
A terminal device, comprising:

the receiving and transmitting unit is used for receiving first information, wherein the first information is used for carrying out semi-static scheduling resource configuration on a first group of terminal equipment, and the first information is used for indicating a period P of frequency domain resources and a first starting time O1;

the transceiver unit is further configured to receive, at a first time T1, data of a first multicast broadcast service MBS using the frequency domain resource, where the first time T1 satisfies t1=o1+np, and N is a positive integer.
The terminal device of claim 16, wherein the transceiver unit is further configured to receive third information, the third information being used to deactivate the frequency domain resource.
The terminal device according to claim 16 or 17, wherein the first information comprises radio resource control information and downlink control information, the downlink control information being scrambled with a group radio network temporary identity of the first group terminal device; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices.
The terminal device according to any of the claims 16-18, wherein the first information comprises first radio resource control information comprising the P and first downlink control information comprising the O1.
The terminal device according to any of the claims 16-18, wherein the first information is first broadcast information, the first broadcast information comprising at least one of the following information: and P is a reference time, wherein the reference time is used for determining the O1.
The terminal device according to any of the claims 16-18, wherein the first information is a first medium access control unit or a first radio resource control information, the first medium access control unit or the first radio resource control information comprising at least one of the following information: and P is a reference time, wherein the reference time is used for determining the O1.
A network device, comprising:

the receiving and transmitting unit is used for transmitting first information to the first group of terminal equipment, wherein the first information is used for indicating the period P of the frequency domain resource and the first starting time O1;

The transceiver unit is further configured to send, at a first time T1, data of a first multicast broadcast service MBS to the first group of terminal devices using the frequency domain resource, where the first time T1 satisfies t1=o1+np, and N is a positive integer.
The network device of claim 22, wherein the network device,

the transceiver unit is further configured to send second information to a second group of terminal devices, where the second information is used to indicate a second starting time O2 of the frequency domain resource, where O2 and O1 satisfy o2=o1+mp, and M is an integer greater than or equal to 0;

the transceiver unit is further configured to send, at a second time T2, the data of the first MBS to the second group of terminal devices using the frequency domain resource, where T2 satisfies t2=o2+kp, and K is a positive integer.
The network device according to claim 22 or 23, wherein the transceiving unit is further configured to send third information to the third group of terminal devices, the third information being used to deactivate the frequency domain resources.
The network device of claim 24, wherein the network device,

the receiving and transmitting unit is further configured to receive feedback information of at least one terminal device in the third group of terminal devices;

The transceiver unit is further configured to send fourth information to the third group of terminal devices until feedback information of all terminal devices in the third group of terminal devices is received, where the fourth information is used to deactivate the frequency domain resource;

the network device further includes:

and the processing unit is used for releasing the frequency domain resources.
The network device according to any one of claims 22 to 25, wherein the first information includes radio resource control information and downlink control information, the downlink control information being scrambled with a group radio network temporary identifier of the first group of terminal devices; or, the first information includes a medium access control unit, and the scheduling information of the medium access control unit is scrambled by using a group radio network temporary identifier of the first group of terminal devices.
The network device according to any one of claims 23 to 25, wherein the first information includes first radio resource control information including the P and first downlink control information including the O1; and/or the second information includes second radio resource control information and second downlink control information, the second radio resource control information includes the P, and the second downlink control information includes the O2.
The network device according to any one of claims 23 to 25, wherein the first information is first broadcast information, the first broadcast information including at least one of: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is second broadcast information, the second broadcast information including at least one of: the P, the reference time is used for determining the O2.
The network device according to any of claims 23-25, wherein the first information is a first medium access control unit or a first radio resource control information, the first medium access control unit or the first radio resource control information comprising at least one of the following information: the P is a reference time, and the reference time is used for determining the O1; and/or the second information is a second medium access control unit or second radio resource control information, the second medium access control unit or second radio resource control information comprising at least one of the following information: the P, the reference time is used for determining the O2.
A terminal device, comprising:

a transceiver unit for receiving a retransmission packet during a wakeup period of a discontinuous reception mode;

a processing unit for extending the awake period by a first period of time;

the apparatus further includes means for detecting an activation command during the extended wakeup period, the activation command to activate a semi-persistent scheduling resource.
A terminal device, comprising: a processor for executing a program stored in a memory, which when executed causes the apparatus to perform the method of any one of claims 1 to 6 or claim 15.
A network device, comprising: a processor for executing a program stored in a memory, which when executed causes the apparatus to perform the method of any one of claims 7 to 14.
A communication system comprising a terminal device according to any of claims 16-21, 30 and a network device according to any of claims 22-29.
A computer readable storage medium comprising instructions which, when run on a computer, cause the method of any one of claims 1 to 15 to be performed.
A computer program product which, when run on a computer, causes the method of any one of claims 1 to 15 to be performed.