CN114071570A

CN114071570A - Transmission method, network side equipment and terminal

Info

Publication number: CN114071570A
Application number: CN202010780783.5A
Authority: CN
Inventors: 柴丽
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-18

Abstract

The invention provides a transmission method, network side equipment and a terminal, wherein the transmission method comprises the following steps: sending uplink information; the uplink information comprises at least one of first uplink control information and first uplink indication information; the first uplink control information includes at least one of the following information: HARQ feedback information of a data packet sent in a point-to-multipoint mode, NACK information and CSI of HARQ of the data packet sent in the point-to-multipoint mode; the first uplink indication information is used for indicating at least one of the following information: information of a data packet transmitted by the point-to-multipoint method that has not been successfully received, information of a data packet transmitted by the point-to-multipoint method that has been successfully received, and retransmission request information. The terminal feeds back HARQ related information, CSI information, or receiving information of a data packet sent in a point-to-multipoint mode to the network side equipment, so that the network side equipment can conveniently adjust the point-to-multipoint mode sending in real time according to the actual situation to improve the quality of service sent in the point-to-multipoint mode.

Description

Transmission method, network side equipment and terminal

Technical Field

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

Background

In a Long Term Evolution (LTE) system, a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) mode is used to transmit a MBMS Service, which is a point-to-multipoint Service, so that resources of the Network can be shared, and a large number of users with the same requirements can be provided with the MBMS Service at the same time by using fewer resources.

On the other hand, the 3GPP has proposed a research topic of single-cell MBMS in LTE-a of R13, wherein a single-cell MBMS service is transmitted on a physical downlink shared channel PDSCH. Single cell point-to-multipoint (SC-PTM) is another method for transmitting broadcast services using the PDSCH. The core networks of MBSFN and SC-PTM are the same.

At present, both MBMS service and single-cell MBMS service do not have a mechanism for Hybrid Automatic Repeat reQuest (HARQ) feedback or Channel State Information (CSI) reporting, and a base station cannot adaptively adjust a Channel according to feedback of User Equipment (UE), which results in a problem that the quality of MBMS service cannot meet the requirement.

Disclosure of Invention

The embodiment of the invention provides a transmission method, network side equipment and a terminal, and aims to solve the problem that the service quality cannot meet the requirement due to the fact that the network side equipment cannot perform self-adaptive adjustment on a channel because a point-to-multipoint service has no feedback mechanism.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a transmission method, which is applied to a terminal, where the transmission method includes:

sending uplink information;

the uplink information comprises at least one of first uplink control information and first uplink indication information;

the first uplink control information includes at least one of the following information: HARQ feedback information of a data packet sent in a point-to-multipoint mode, NACK information and CSI of HARQ of the data packet sent in the point-to-multipoint mode;

the first uplink indication information is used for indicating at least one of the following information: information of a data packet transmitted by the point-to-multipoint method that has not been successfully received, information of a data packet transmitted by the point-to-multipoint method that has been successfully received, and retransmission request information.

In the transmission method, the first uplink indication information is transmitted through a scheduling request SR, a buffer status report BSR, a MAC CE, a RLC signaling, or an uplink data packet.

The above transmission method, before sending the uplink information, further includes:

receiving first configuration information sent by a network side device, and configuring transmission resources for sending the first uplink control information;

and/or

And receiving second configuration information sent by the network side equipment, and configuring the codebook set of the first uplink control information.

The transmission method above, wherein the first configuration information includes information of at least one dimension of the transmission resource in a time domain, a frequency domain or a spatial domain.

In the above transmission method, the first configuration information includes first offset information of the transmission resource in a time domain with respect to a PDSCH (physical downlink shared channel) transmitted in a point-to-multipoint manner.

The transmission method above, wherein the first offset information is related to at least one of the following information: the cell radio network temporary identifier C-RNTI of the terminal, the truncated C-RNTI of the terminal, the recovery identifier information of the terminal and the truncated recovery identifier information of the terminal; the Temporary Mobile Subscriber Identity (TMSI) of the terminal, the offset configured by the network side equipment and the unique index of the terminal in the group.

In the transmission method, the first offset information is transmitted through a downlink control information DCI and/or a radio resource control RRC message.

In the transmission method, the PDCCH carrying the DCI is scrambled by a group radio network temporary identifier RNTI or a C-RNTI, and the first offset information includes a first offset value corresponding to the terminal, or includes an offset initial value and an offset corresponding to the terminal.

In the transmission method, the first offset information is selected from an offset set configured by a network side device.

In the transmission method, the first configuration information includes information of a carrier where the transmission resource is located, information of a bandwidth portion BWP where the transmission resource is located, or relative frequency offset information.

In the transmission method, the first configuration information includes a synchronization signal block SSB associated with the transmission resource, a channel state information reference signal CSI-RS and/or other beam information.

and starting or stopping sending the uplink information under the condition that a starting condition or a stopping condition is met.

The above-mentioned transmission method, wherein,

the start-up conditions include at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

the measurement result of the CSI, the RSRP and/or the RSRQ is less than or equal to a preset threshold;

the accumulated times of receiving errors of the data packets sent in a point-to-multipoint mode is greater than or equal to a preset number;

the duration that the measurement result of the CSI, the RSRP and/or the RSRQ is less than or equal to a preset threshold exceeds a preset time;

the accumulated times of receiving errors of the data packets sent in a point-to-multipoint mode in a preset time is greater than or equal to a preset number; and

the accumulated times of the data packet receiving errors continuously generated and sent in a point-to-multipoint mode is more than or equal to a preset number;

and/or:

the stop condition includes at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

the measurement result of the channel state information CSI, the reference signal received power RSRP and/or the reference signal received quality RSRQ is larger than or equal to a preset threshold;

the duration that the CSI, RSRP and/or RSRQ measurement result is greater than or equal to a preset threshold exceeds a preset time;

in a preset time, the cumulative times of receiving errors of the data packets sent in a point-to-multipoint mode are less than or equal to a preset number;

the cumulative number of times of reception errors of the continuously occurring point-to-multipoint transmitted packets is greater than or equal to a predetermined number.

In the transmission method, when the terminal is in the IDLE state and/or the INACTIVE state, the sending the uplink information specifically includes:

sending the uplink information through a message and/or a first uplink resource in a random access process;

wherein the message in the random access procedure includes at least one of the following: MSG a in the two-step random access procedure, MSG1 in the four-step random access procedure, and MSG3 in the four-step random access procedure.

The above-mentioned transmission method, wherein,

the first uplink resource is at least one of:

public uplink resources configured by the serving cell and/or the adjacent cell and used for sending the uplink information;

an uplink resource pre-configured for the terminal;

before the terminal is converted into an IDLE state and/or an INACTIVE state from a connected state, controlling uplink resources notified by an RRC (radio resource control) signaling through radio resources;

in the free mode, uplink resources in other connected cells are allocated.

In the foregoing transmission method, after the sending the uplink information through the message in the random access procedure and/or the first uplink resource, the method further includes:

and receiving the data retransmitted by the network side equipment in the unicast mode or the data retransmitted by the multicast mode.

In the transmission method, receiving the data retransmitted by the network side device in the unicast manner includes:

receiving indication information which is sent by network side equipment and indicates unicast mode retransmission;

switching to a connected state;

and receiving the data retransmitted by the unicast mode in a connected state.

In the transmission method, receiving the data retransmitted by the network side device in the multicast mode includes:

receiving configuration information of a second downlink resource for multicast mode retransmission sent by network side equipment;

and receiving the data retransmitted by the multicast mode on the resources retransmitted by the multicast mode indicated by the resource configuration information.

In the foregoing transmission method, the second downlink resource is at least one of:

second downlink resources which are configured by the serving cell and/or the adjacent cell and used for multicast mode retransmission;

pre-configuring downlink resources for the terminal;

before the terminal is converted into an IDLE state and/or an INACTIVE state from a connected state, the downlink resource is notified through an RRC signaling;

in the free mode, downlink resources in other connected cells are allocated.

In the transmission method, the configuration information of the second downlink resource further includes retransmission time information.

In the above transmission method, the data retransmitted by the multicast method uses a group radio network temporary identifier.

In the foregoing transmission method, the first uplink indication information includes at least one of the following information:

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

the multicast data radio carries DRB sequence number information.

In the transmission method, the uplink information is transmitted through PUCCH resources or a unicast wireless channel.

In the transmission method, the uplink information is sent through at least one of the following unicast wireless channels: a unicast radio channel for transmitting unicast traffic, a unicast radio channel for transmitting unicast protocol data unit, PDU, sessions, a unicast radio channel for transmitting multicast PDU sessions, and a unicast radio channel for transmitting unicast PDU sessions for multicast traffic.

In the foregoing transmission method, after the sending the uplink information, the method further includes:

The above transmission method, wherein the retransmitted data is transmitted through at least one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel for receiving unicast PDU sessions for multicast traffic.

receiving configuration information of a third downlink resource which is sent by network side equipment and used for multicast mode retransmission;

In the transmission method, the third downlink resource is further configured to transmit data which is sent to the IDLE-state and/or INACTIVE-state terminal and is retransmitted in a multicast manner.

In the transmission method, the third downlink resource is at least one of:

downlink resources which are configured by the serving cell and/or the adjacent cell and used for multicast mode retransmission;

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

In the above transmission method, the configuration information of the third downlink resource further includes retransmission time information.

In the transmission method, the unicast wireless channel for sending the uplink information is a unicast wireless channel configured by the network side device, or a unicast wireless channel selected by the terminal.

The transmission method further includes:

and sending connection indication information to indicate the unicast wireless channel connection selected by the terminal.

In the transmission method, the uplink information is carried by a PUCCH transmitted on a unicast radio channel, and the PUCCH is scrambled by an RNTI dedicated to the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

In a second aspect, an embodiment of the present invention provides a transmission method, which is applied to a network device, where the transmission method includes:

receiving uplink information sent by a terminal;

In the above transmission method, before receiving the uplink information sent by the terminal, the method further includes:

sending first configuration information for configuring transmission resources for sending the first uplink control information;

and/or

And sending second configuration information for configuring the codebook set of the first uplink control information.

In the transmission method, when the terminal is in the IDLE state and/or the INACTIVE state, the receiving the uplink information sent by the terminal specifically includes:

receiving the uplink information sent by the terminal through a message and/or a first uplink resource in a random access process;

In the foregoing transmission method, the first uplink resource is at least one of:

pre-configuring uplink resources for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, the uplink resource is notified through RRC signaling;

in the free mode, uplink resources in other connected cells are allocated.

The above transmission method, after receiving the uplink information sent by the terminal through the message in the random access procedure, further includes:

and sending the data retransmitted by the unicast mode or the data retransmitted by the multicast mode.

In the transmission method, the sending the data retransmitted in the unicast mode includes:

sending indication information retransmitted in a unicast mode;

and sending the retransmitted data corresponding to the indication information retransmitted in the unicast mode.

In the transmission method, the sending the data retransmitted by the multicast method includes:

sending configuration information of a second downlink resource for multicast mode retransmission;

and sending the data retransmitted by the multicast mode on the resources retransmitted by the multicast mode indicated by the configuration information of the second downlink resources.

pre-configuring downlink resources for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, the downlink resource is notified through an RRC signaling;

in the free mode, downlink resources in other connected cells are allocated.

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

the multicast data radio carries DRB sequence number information.

In the above transmission method, after receiving the uplink information sent by the terminal, the method further includes:

and sending the data retransmitted in the unicast mode or the data retransmitted in the multicast mode to the terminal.

The above transmission method, wherein the retransmitted data is transmitted through one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel for receiving unicast PDU sessions for multicast traffic.

The transmission method further includes:

and receiving connection indication information indicating the unicast wireless channel selected by the terminal.

In the transmission method, the uplink information is carried by a PUCCH transmitted over a unicast radio channel connection, and the PUCCH is scrambled by an RNTI dedicated to the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

In the transmission method, the sending the data retransmitted by the multicast method to the terminal includes:

sending configuration information of a third downlink resource for multicast mode retransmission;

and sending the data retransmitted by the multicast mode on the resources retransmitted by the multicast mode indicated by the resource configuration information.

In the transmission method, the third downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

In a third aspect, an embodiment of the present invention provides a transmission method, which is applied to a terminal, where the transmission method includes:

transmitting third uplink control information on the transmission resources allocated for the point-to-multipoint transmission;

the third uplink control information includes at least one of the following information: HARQ feedback information of the data packet transmitted by the point-to-multipoint mode, NACK information and CSI of the HARQ of the data packet transmitted by the point-to-multipoint mode.

In a fourth aspect, an embodiment of the present invention provides a transmission method, which is applied to a network device, where the transmission method includes:

receiving third uplink control information sent by all terminals in the same group on transmission resources distributed for point-to-multipoint transmission;

The transmission method further includes:

and transmitting retransmission data transmitted by the point-to-multipoint mode under the condition that the number of the received NACK information of the data packets transmitted by the point-to-multipoint mode exceeds a preset threshold or the energy accumulation corresponding to the NACK information of the received data packets transmitted by the point-to-multipoint mode exceeds a preset threshold.

The above-mentioned transmission method, wherein,

the priority of the retransmission data of the data packet sent in the point-to-multipoint mode is higher than the priority of downlink transmission of the semi-persistent scheduling SPS;

or

The priority of the retransmission data of the data packet sent in the point-to-multipoint mode is higher than the priority of the downlink transmission of the unicast wireless channel service.

In a fifth aspect, an embodiment of the present invention provides a terminal, including: a processor and a transceiver;

the transceiver is used for transmitting uplink information;

the first uplink control information includes at least one of the following information: HARQ feedback information of a data packet sent in a point-to-multipoint mode, NACK information of HARQ of the data packet sent in the point-to-multipoint mode and CSI sent in the point-to-multipoint mode;

In a sixth aspect, an embodiment of the present invention provides a terminal, including:

a sending module, configured to send uplink information;

In a seventh aspect, an embodiment of the present invention provides a terminal, including a processor and a transceiver;

the transceiver is configured to send the corresponding third uplink control information in a point-to-multipoint manner on the transmission resource allocated for the point-to-multipoint manner sending;

the third uplink control information includes at least one of the following information: HARQ feedback information of a data packet transmitted by the point-to-multipoint method, HARQ NACK information of the data packet transmitted by the point-to-multipoint method, and CSI transmitted by the point-to-multipoint method.

In an eighth aspect, an embodiment of the present invention provides a terminal, including:

a sending module, configured to send the corresponding third uplink control information in a point-to-multipoint manner on the transmission resource allocated for the point-to-multipoint manner sending;

In a ninth aspect, an embodiment of the present invention provides a network side device, including: a processor and a transceiver;

the transceiver is used for receiving uplink information sent by the terminal;

In a tenth aspect, an embodiment of the present invention provides a network-side device, including:

the receiving module is used for receiving uplink information sent by the terminal;

In an eleventh aspect, an embodiment of the present invention provides a network-side device, including: a processor and a transceiver;

the transceiver is configured to receive third uplink control information sent by all terminals in the same group on a transmission resource allocated for point-to-multipoint transmission;

In a twelfth aspect, an embodiment of the present invention provides a network-side device, including:

a sending module, configured to receive third uplink control information sent by all terminals in the same group on a transmission resource allocated for point-to-multipoint transmission;

In a thirteenth aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and being executable on the processor, where the computer program, when executed by the processor, implements the steps in the transmission method according to the first aspect, or the computer program, when executed by the processor, implements the steps in the transmission method according to the third aspect.

In a fourteenth aspect, an embodiment of the present invention provides a network-side device, which includes a processor, a memory, and a computer program stored on the memory and being executable on the processor, where the computer program, when executed by the processor, implements the steps in the transmission method according to the second aspect, or the computer program, when executed by the processor, implements the steps in the transmission method according to the fourth aspect.

Fifteenth aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores thereon a computer program, and the computer program, when executed by a processor, implements the steps in the transmission method according to the first aspect, or the computer program, when executed by the processor, implements the steps in the transmission method according to the second aspect, or the computer program, when executed by the processor, implements the steps in the transmission method according to the third aspect, or the computer program, when executed by the processor, implements the steps in the transmission method according to the fourth aspect.

In the embodiment of the invention, uplink information is sent through a terminal; the uplink information comprises at least one of first uplink control information and first uplink indication information; the first uplink control information includes at least one of the following information: HARQ feedback information of a data packet sent in a point-to-multipoint mode, NACK information and CSI of HARQ of the data packet sent in the point-to-multipoint mode; the first uplink indication information is used for indicating at least one of the following information: information of a data packet transmitted by the point-to-multipoint method that has not been successfully received, information of a data packet transmitted by the point-to-multipoint method that has been successfully received, and retransmission request information. The terminal feeds back HARQ related information, CSI information, or receiving information of a data packet sent in a point-to-multipoint mode to the network side equipment, so that the network side equipment can conveniently adjust the point-to-multipoint mode sending in real time according to the actual situation to improve the quality of service sent in the point-to-multipoint mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a flowchart of a transmission method according to an embodiment of the present invention;

fig. 2 is a second flowchart of a transmission method according to an embodiment of the present invention;

fig. 3 is a third flowchart of a transmission method according to an embodiment of the present invention;

fig. 4 is a fourth flowchart of a transmission method according to an embodiment of the present invention;

fig. 5 is a diagram illustrating a structure of a terminal according to an embodiment of the present invention;

fig. 6 is a second structural diagram of a terminal according to an embodiment of the present invention;

fig. 7 is one of the structural diagrams of a network side device according to an embodiment of the present invention;

fig. 8 is a second structural diagram of a network-side device according to an embodiment of the present invention;

fig. 9 is a third structural diagram of a network-side device according to an embodiment of the present invention;

fig. 10 is a third structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

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

The data packets transmitted in the point-to-multipoint manner mentioned in this specification include at least one of data packets transmitted in a single cell-point-to-multipoint (SC-PTM) manner, data packets transmitted in a Multimedia Broadcast Multicast Service (MBMS) manner, and data packets transmitted in a Free-to-Air (Free-to-Air) manner, but are not limited thereto.

The scheme of the invention is oriented to a multicast and/or broadcast mode; in the present invention, multicast is taken as an example.

Referring to fig. 1, fig. 1 is a flowchart of a transmission method provided in an embodiment of the present invention, and is applied to a terminal, as shown in fig. 1, the method includes the following steps:

step 101, sending uplink information;

the first uplink control information includes at least one of the following information: hybrid Automatic Repeat reQuest (HARQ ) feedback Information of a data packet transmitted in a point-to-multipoint manner, Negative-acknowledgement (NACK) Information of the HARQ of the data packet transmitted in the point-to-multipoint manner, and Channel State Information (CSI);

In the embodiment of the invention, the data packet transmitted in the point-to-multipoint mode can be a data packet transmitted under various multicast or broadcast services such as MBMS service and the like. The MBMS can share the network resource, and provide multimedia service for a large number of users with the same requirement simultaneously with less resource.

And the terminal feeds back the receiving condition of the data packet sent in a point-to-multipoint mode to the network side equipment through the uplink information. The uplink information may be understood as feedback information of the terminal for the data packet sent in the point-to-multipoint manner, and may include:

first uplink control information sent through a Physical Uplink Control Channel (PUCCH), so that a network side can perform service processing according to the uplink control information, for example, perform retransmission according to received HARQ NACK;

and/or

And first uplink indication information.

After receiving the uplink information sent by the terminal, the network side device may determine the reception condition, network quality, and the like of the data packet sent in a point-to-multipoint transmission manner, so that the service may be adjusted according to the actual condition, for example, the data packet is retransmitted in a unicast manner, the data packet is retransmitted in a multicast manner, the transmission power is adjusted, and the like, so as to improve the service quality.

In the embodiment, uplink information is sent through a terminal; the uplink information comprises at least one of first uplink control information and first uplink indication information; the first uplink control information includes at least one of the following information: HARQ feedback information of a data packet sent in a point-to-multipoint mode, NACK information and CSI of HARQ of the data packet sent in the point-to-multipoint mode; the first uplink indication information is used for indicating at least one of the following information: information of a data packet transmitted by the point-to-multipoint method that has not been successfully received, information of a data packet transmitted by the point-to-multipoint method that has been successfully received, and retransmission request information.

The terminal feeds back HARQ related information and CSI information or receiving information of a data packet sent in a point-to-multipoint mode to the network side equipment, so that the network side equipment can adjust the HARQ related information and the CSI information in real time according to actual conditions, and the service quality is improved.

In the specific embodiment of the present invention, the uplink information may be divided into uplink control information and uplink indication information, which describe the packet receiving condition, the service condition, the channel condition, and the like, and the differences are different in the different transmission carriers and the different description modes, but can be adjusted after being received by the sending end to improve the service quality.

The first uplink indication information may be transmitted through a Scheduling Request (SR), a Buffer State Report (BSR), a Media Access Control (MAC) Control unit (Control Element, CE), a Radio Link Control (RLC) signaling, or an uplink data packet.

For the first uplink control information, the first uplink control information may be transmitted through an uplink physical control channel PUCCH, and the configuration of the PUCCH may be configured in advance by the network side, that is, in the specific embodiment of the present invention, before the step 101 of sending the uplink information, the method further includes:

and/or

For the point-to-multipoint transmission method, the receiving end includes multiple receiving ends, so as to facilitate the network side to distinguish different receiving ends, the specific embodiment of the present invention may be implemented in multiple ways, which are described below.

In one mode, the transmission resource of the first uplink control information is related to the terminal, and the network side device configures the transmission resource of the first uplink control information for different terminals respectively; for example, the network side device configures different transmission resources of the first uplink control information for different terminals. Therefore, the network side device can know which terminal sends the first uplink control information according to the transmission resource of the first uplink control information, and further can perform targeted adjustment on the terminal according to the first uplink control information, so that the service quality is improved.

In another mode, in a case that the transmission of the uplink control information is implemented based on a codebook, a codebook set for the first uplink control information transmission may be configured to be related to the terminal, that is, the network-side device configures codebook sets for different terminals, for example, the network-side device configures different codebook sets for different terminals to transmit the uplink control information.

In this way, since different codebook sets are configured for different terminals, the network side device can know which terminal sends the first uplink control information according to the decoding condition of the first uplink control information, so that the network side device can adjust the terminal in a targeted manner according to the first uplink control information, thereby improving the service quality.

In the above manner, the identification of the sender of the information can be achieved by controlling the transmission resource of the first uplink control information to be related to the terminal. While the transmission resources may be distinguished from different dimensions, such as time, frequency or spatial domain.

Therefore, in an embodiment of the present application, the first configuration information may include information of at least one dimension of the transmission resource in a time domain, a frequency domain, or a spatial domain. And realizing the identification of the sender by configuring the relation between the transmission resource for sending the first uplink control information and the terminal in a time domain, a frequency domain or a space domain.

In a specific implementation manner of the first configuration information, the first configuration information includes first offset information of the transmission resources in a time domain with respect to a PDSCH transmitted in a point-to-multipoint manner.

The UE (i.e. the terminal) derives the resource position of the PUCCH for sending the HARQ feedback according to the resource position of the PDSCH (optionally, combining the received downlink scheduling signaling start CCE index and the number of CCEs in the downlink control resource set where the received downlink scheduling signaling implicitly indicates the resource index) and K1 (a difference between one PDSCH and the PUCCH slot index), and then adding a UE-specific offset (i.e. the first offset information), so that the transmission resource position of each UE for sending the first uplink control information can be diverged in the time domain. Therefore, the base station can also identify which UE transmits the uplink control information.

Further, the sent multicast service can be retransmitted to the UE feeding back NACK according to the mapping relationship between the resource location and the UE.

In the specific embodiment of the present invention, the terminal may utilize the transmission resources of the first uplink control information respectively configured by the network side device for different terminals, and/or the difference of the PDSCH-to-PUCCH slot indexes sent by the network in a point-to-multipoint manner; alternatively, the terminal may determine the terminal-specific time offset by identification information unique to each terminal.

In this manner, the first offset information may be calculated by at least one of the following information: a Cell-radio network temporary identifier (C-RNTI) of the terminal, a truncated C-RNTI of the terminal, recovery identification information of the terminal, and truncated recovery identification information of the terminal; a Temporary Mobile Subscriber Identity (TMSI) of the terminal, an offset configured by a network side device, a unique index of the terminal in a group.

The concrete description is as follows.

The offset of the transmission resource of each UE from the DownLink (DL) PDSCH (i.e., the index (index) of the PDSCH resource block receiving the multicast traffic) can be determined by performing a modulo operation on the identification information of the UE. For example, the identification information is C-RNTI or truncated C-RNTI; for INACTIVE UE, the recovery identification information (i.e. RESUME ID) of the terminal may be used;

if the UE is in IDLE state or INACTIVE state, the offset may be determined by TMSI or truncated C-RNTI of the terminal, i.e. introducing K3:

k3 ═ (index of last multicast UE HARQ feedback resource-index of first multicast UE HARQ feedback resource) mod (UE ID/index of UE);

of course, the offset may be configured by the network side device, and indicated by a system message or an MCCH message.

Alternatively, each UE may be configured with an index in the group (i.e., a unique index of the terminal in the group) in advance through an RRC message, and the index may be used to calculate the offset unique to the terminal.

And before the IDLE-state UE needs to receive the multicast service, the base station may be informed of its own information, so that the base station determines the terminal sending the uplink information by combining the information and the location of the transmission resource.

If the UE is in IDLE state, the TMSI of the terminal may be notified to the base station, specifically, the base station may be notified of the TMSI information of the terminal and the interested multicast information by using MSG1, MSGA, or MSG3, for example, the base station is notified of TMSI, Session id, etc., and the base station notifies the index corresponding to the UE of a certain group in the dedicated information or broadcast message; similar operations need to be performed when a new UE joins or an old UE exits the multicast group, for example, the base station informs the index corresponding to the UE of a certain group in the dedicated information or broadcast message.

And the UE may determine offset information of a transmission resource for transmitting the first uplink control information according to the index, and transmit the first uplink control information on the corresponding resource.

Further, the first offset information is transmitted through downlink control information DCI and/or radio resource control RRC message.

The PDCCH bearing the DCI is scrambled by a group Radio Network Temporary Identity (RNTI) or a C-RNTI.

And the first offset information may include a first offset value corresponding to the terminal, or an offset initial value and an offset corresponding to the terminal.

The first offset information includes a first offset value corresponding to the terminal, and the feedback time and resource position of each terminal may be staggered by setting different first offset values for different terminals. The base station may determine which terminal transmits the feedback according to an offset value of the transmission resource for transmitting the first uplink control information with respect to the PDSCH.

And the first offset information may further include a uniform initial offset value and an offset corresponding to the terminal, and the offset value of the terminal is determined by calculating the initial offset value and the offset corresponding to the terminal.

Further, the first offset information is selected from an offset set configured by the network side device, which may be understood as that the first offset information is used to select an offset from an offset set configured by the network side device, where the offset may be an actual offset value or a sequence number, and the sequence number corresponds to an offset value.

The transmission resources can be distinguished not only in the time domain but also in the frequency domain.

In another specific implementation manner of the first configuration information, the first configuration information includes information of a carrier where the transmission resource is located, information of a Bandwidth Part (BWP) where the transmission resource is located, or relative frequency offset information.

Specifically, if a UE is a carrier aggregation CA-UE, the UE receives a multicast service on a carrier 1, and the base station configures another carrier 2 for the UE and indicates an uplink feedback and Channel State Information (CSI) report for sending the multicast service on the carrier 1;

for example, different carriers may be configured for the terminals, so that different terminals may send the first uplink control information via different carriers. And the network side device may also distinguish the terminal to be transmitted according to the carrier where the first uplink control information is located.

When the carrier granularity cannot be distinguished, the first configuration information may further include the offset information of the transmission resource, and the first configuration information and the offset information are combined together to distinguish the terminals.

For example, different BWPs may be respectively configured for the terminals, so that the different terminals may transmit the first uplink control information through the different BWPs. The network side device may also distinguish the sending terminal through the BWP where the first uplink control information is located.

Because the configuration and activation of BWP are UE-granular, if the UE receives the multicast service on the activated downlink BWP1, the base station may configure an uplink BWP2 that does not completely overlap with other UEs for the UE and indicate uplink feedback and CSI report for sending the multicast service on BWP 1.

Similarly, when the BWP granularity cannot be distinguished, the first configuration information may further include the offset information of the transmission resource, which are combined to distinguish the terminals.

For example, different Physical Resource Blocks (PRBs) may be allocated to the terminals, so that different terminals can transmit the first uplink control information via different PRBs. And the network side device may also distinguish the terminal to be transmitted according to the PRB in which the first uplink control information is located.

Also, the above-mentioned PRB may be described by relative frequency offset information, for example, including a frequency offset value corresponding to the terminal, or including a frequency offset initial value and a frequency offset value corresponding to the terminal.

The transmission resources can be distinguished not only in the time domain and the frequency domain, but also in the spatial domain.

In one embodiment of the present application, the first configuration information includes SSBs, CSI-RSs and/or other beam information associated with the transmission resources.

Since the dedicated beam (CSI-RS) resource and the common beam (SSB) are used depending on the direction of the UE, the UE receives the multicast service on the downlink dedicated beam (CSI-RS) resource and the common beam (SSB) polled at time t0, and the base station may configure spatially non-overlapping Physical random-access channel (PRACH) resource, PUCCH resource or PUSCH resource (of different directions) for different UEs for uplink feedback and CSI reporting of the multicast service.

Similarly, when the terminal cannot be distinguished by the direction granularity, the first configuration information may further include the offset information of the transmission resource, and the first configuration information and the offset information are combined to implement the terminal distinction.

In an embodiment of the present application, before the step 101, before sending the uplink information, the method further includes:

And starting to transmit the uplink information when the starting condition is met, or stopping transmitting the uplink information when the stopping condition is met.

Wherein the start-up conditions include at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

a measurement result of CSI, Reference Signal Receiving Power (RSRP) and/or Reference Signal Receiving Quality (RSRQ) is less than or equal to a preset threshold;

and/or:

the stop condition includes at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

the measurement result of the CSI, the RSRP and/or the RSRQ is larger than or equal to a preset threshold;

When the number of the UEs connected to the base station is small (i.e. less than the threshold notified by the base station), start UL CSI/HARQ feedback (feedback), i.e. start sending uplink information.

The above conditions are exemplified as follows.

And when the number of the UE connected with the base station is increased and is more than the threshold informed by the base station, the terminal does not feed back, and closes the UL CSI/HARQ feedback, namely stops sending the uplink information.

The base station may configure specific conditions to determine the UEs in the group that need to start UL CSI/HARQ feedback; or the base station informs the UE of a table with mapping relationships, including threshold values and duration information of channel state information reference signals (CSI-RS)/Synchronization Signal Blocks (SSB) measurement results; then, the UE determines whether to start feedback of the first uplink control information (e.g., feedback of UL CSI measurement results, HARQ feedback information of data packets transmitted in a point-to-multipoint manner, and false acknowledgement NACK information of HARQ of data packets transmitted in a point-to-multipoint manner) according to the table content transmitted by the base station.

Specifically, the base station informs the UE of a table with a mapping relationship, as shown in table 1, including a threshold value X and duration information t of a CSI-RS/SSB measurement result; the UE determines whether to start UL CSI measurement result/HARQ feedback according to the table content sent by the base station;

TABLE 1

CSI-RS/SSB measurement result threshold value X	Duration information t	Whether to turn on feedback
			Step down 1	t1	Whether or not
Step down 2	t2	Is that

Or, the base station informs the UE of a table with a mapping relationship, as shown in table 2, the number of consecutive times that the packet received by the UE in error reaches is m, and the UE may determine whether to start UL CSI measurement result/HARQ feedback according to the table content sent by the base station;

TABLE 2

If the threshold value X and the duration time information t of the CSI-RS/SSB measurement result are known, when the duration time t1 of the CSI-RS/SSB measurement result of the UE is lower than the threshold value X, the UE determines whether to start UL CSI measurement result/HARQ feedback according to table contents sent by the base station. If the ue is turned on, taking HARQ information as an example, when sending HARQ feedback to the base station, the ue may carry information of previous packet errors, including the number of packet errors, resource information (time/frequency and/or beam) corresponding to the packet errors, and measurement results of CSI-RS/SSB and resource information (time/frequency and/or beam) corresponding to the measurement results in time t 1.

And/or the presence of a gas in the gas,

when the number of consecutive times that the packet received by the UE in error reaches is m, the UE determines whether to start UL CSI/HARQ feedback according to the table content sent by the base station. If the HARQ feedback is on, when sending HARQ feedback to the base station, the HARQ feedback may carry information of previous packet errors, including the number of packet errors and resource information (time/frequency and/or beam) corresponding to the packet errors.

Or, the base station informs the UE of the number m of packet errors (i.e. the predetermined number), and when the number of consecutive packet errors received by the UE is m, the UE may turn on UL CSI/HARQ feedback by itself, and simultaneously send HARQ feedback to the base station, the UE may carry information of previous packet errors, including the number of packet errors and resource information (time/frequency and/or beam) corresponding to the packet errors.

Or the base station informs the UE of a threshold value X (namely a preset threshold) and duration information t (namely preset time) of the CSI-RS/SSB measurement result; when the CSI-RS/SSB measurement result of the UE is lower than the threshold X for time t1, the UE may turn on UL CSI measurement result/HARQ feedback, and send HARQ feedback to the base station, where the UE may carry information of previous packet errors, including the number of packet errors, resource information (time/frequency and/or beam) corresponding to the packet errors, and the CSI-RS/SSB measurement result and resource information (time/frequency and/or beam) corresponding to the CSI-RS/SSB measurement result in time t 1.

In addition, the base station determines whether the UE has a relationship at a cell edge according to at least one of the following information;

according to the RSRP value of the UE;

the TA size of the UE;

if the UE has the positioning information, the positioning information is determined according to the positioning information.

For a terminal in a connected state, the transmission of the uplink information may be performed through an established connection, and how to perform the feedback of the uplink information for a terminal in an IDLE state and/or an INACTIVE state, another scheme is proposed in the specific embodiment of the present invention, which is described below.

In an embodiment of the present application, the sending the uplink information when the terminal is in an IDLE state and/or an INACTIVE state specifically includes:

and sending the uplink information through the message and/or the first uplink resource in the random access process.

The scenario corresponding to this embodiment is that the terminal and the network side device have no link connection (the terminal is in INACTIVE state), or have no available link connection (the terminal is in IDLE state), and the terminal sends the uplink information to the network side device by using a random access procedure.

In another mode, the uplink information may also be sent through the first uplink resource.

The message in the random access procedure comprises at least one of the following: MSG a in the two-step random access procedure, MSG1 in the four-step random access procedure, and MSG3 in the four-step random access procedure.

And the first uplink resource is at least one of:

pre-configuring uplink resources for the terminal;

in free to air mode, uplink resources in other connected cells are allocated.

After the network side device receives the uplink information, it may perform various adjustments according to the uplink information, for example, perform retransmission of a data packet according to the received NACK information.

The retransmission of the data packet may be performed in a unicast manner or in a multicast manner according to different situations, which is described below.

In the specific embodiment of the present invention, after sending the uplink information through the message in the random access procedure and/or the first uplink resource, the method further includes: and receiving the data retransmitted by the network side equipment in the unicast mode or the data retransmitted by the multicast mode.

After the terminal sends the uplink information, the terminal can receive data retransmitted by the base station in a unicast mode or data retransmitted by the base station in a multicast mode by using a time window.

The base station can instruct the terminal to monitor the retransmission resource through system messages or RRC, or the base station informs the UE to receive the retransmission content in a unicast mode.

The receiving of the data retransmitted in the unicast mode and sent by the network side device includes:

switching to a connected state;

and receiving the data retransmitted by the unicast mode in a connected state.

If the unicast mode retransmission is determined, a retransmission indication is sent on a time window; otherwise, the UE may receive data retransmitted in a multicast manner scrambled by a Group-Radio Network temporary Identity (G-RNTI) within a time window.

The retransmission indication may be indicated by adding an indication bit in the DCI, for example, if the indication bit is 0 to indicate that the unicast retransmission is started, the UE in the IDLE state or the INACTIVE state enters the connected state; and the connected UE ignores the DCI, and if the indication bit is 1, the terminal continues to read the retransmission data.

The receiving of the data retransmitted by the network side device in the multicast mode includes:

Wherein the second downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

in free to air mode, downlink resources in other connected cells are allocated.

The multicast retransmitted data uses a group radio network temporary identifier.

Specifically, if the retransmission is in a Multicast mode, the network side device broadcasts two sets of resource configurations of Multicast Control Channels (MCCH): one set is the original MCCH resource allocation; and the other set is the configuration of the MCCH resources for retransmission and the corresponding MTCH resources.

Optionally, the resource configuration information may carry the number of consecutive retransmissions, that is, the configuration information of the second downlink resource further includes retransmission time information. Meanwhile, the retransmission is still scrambled by the G-RNTI, so that all the UE can receive the data retransmitted by the multicast mode and perform soft combining.

In the foregoing, in the embodiment of the present invention, the uplink information may be divided into uplink control information and uplink indication information, which describe service conditions and channel conditions that are sent in a point-to-multipoint manner, and the differences are different in different transmission bearers and different description manners, but all of the uplink control information and the uplink indication information can adjust the service after being received by the sending end to improve the service quality.

And the first uplink indication information includes at least one of the following information:

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

In an embodiment of the present application, the uplink information is sent through a PUCCH resource or a unicast wireless channel. For example, by at least one of the following unicast wireless channels: a unicast radio channel for transmitting unicast traffic, a unicast radio channel for transmitting unicast PDU sessions, a unicast radio channel for transmitting multicast Protocol Data Unit (PDU) sessions, and a unicast radio channel for transmitting unicast PDU sessions for multicast traffic.

Similarly, for the connected UE, after the uplink information is transmitted, the data retransmitted by the unicast method or the data retransmitted by the multicast method, which is transmitted by the network side according to different situations, may be received. That is, in an embodiment of the present application, after the step 101 of sending the uplink information, the method further includes:

In this embodiment, the terminal may receive, in a connected state, data retransmitted in a unicast manner or data retransmitted in a multicast manner, where the data is transmitted by the network side device.

Also, the retransmitted data is transmitted through one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel for receiving unicast PDU sessions for multicast traffic.

In an embodiment of the present application, the unicast wireless channel for sending the uplink information is a unicast wireless channel configured by a network side device, or a unicast wireless channel selected by a terminal.

Of course, when the unicast wireless channel connection is selected by the terminal, the network side device may be notified of the unicast wireless channel connection selected by the terminal, so that the network side may receive the unicast wireless channel connection in a suitable connection. That is, in an embodiment of the present application, the transmission method further includes: and sending connection indication information to indicate the unicast wireless channel selected by the terminal.

The sender distinction of the uplink information can also realize implicit indication through the RNTI. In this way, the uplink information is carried by a PUCCH transmitted over a unicast radio channel connection, the PUCCH being scrambled by an RNTI dedicated to the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

Since the PUCCH is scrambled by the RNTI dedicated to the terminal, different terminals are scrambled by corresponding to different RNTIs, and the network side device is informed of which terminal is transmitting uplink information in an implicit manner.

And the third downlink resource is also used for transmitting data which is sent to the terminal in the IDLE state and/or the INACTIVE state and is retransmitted in a multicast mode. In other words, the third downlink resource and the previous second downlink resource may be the same resource.

And the third downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

Likewise, the configuration information of the third downlink resource may also include retransmission number information.

The data retransmitted by the multicast mode uses the temporary identifier of the group wireless network, so that all terminals can receive the retransmitted data conveniently.

Referring to fig. 2, fig. 2 is a flowchart of a transmission method provided in an embodiment of the present invention, and is applied to a network side device, as shown in fig. 2, the method includes the following steps:

step 201, receiving uplink information sent by a terminal;

The point-to-multipoint service in the embodiment of the invention can be various multicast or broadcast services such as MBMS service and the like. The MBMS can share the network resource, and provide multimedia service for a large number of users with the same requirement simultaneously with less resource.

And the terminal feeds back the receiving condition of the data packet sent in a point-to-multipoint mode to the network side equipment through the uplink information. The uplink information may be understood as feedback information sent by the terminal in a point-to-multipoint manner, and may include:

and first uplink control information transmitted through the PUCCH. Thus, the network side can perform service processing according to the uplink control information, for example, perform retransmission according to the received HARQ NACK;

and/or

And first uplink indication information.

The first uplink indication information is transmitted through a scheduling request SR, a buffer status report BSR, a media access control element MAC CE, a radio link control RLC signaling, or an uplink data packet.

For the first uplink control information, the first uplink control information may be transmitted through an uplink control channel PUCCH, and the configuration of the uplink control channel PUCCH may be preconfigured by the network side, that is, in the specific embodiment of the present invention, the method further includes:

sending first configuration information for configuring transmission resources for sending the first uplink control information; and/or

In the above manner, the identification of the sender of the information can be achieved by controlling the transmission resource of the first uplink control information to be related to the terminal. While the transmission resources may be distinguished from different dimensions, such as time, frequency or spatial domain. That is, the first configuration information includes information of at least one dimension of the transmission resources in a time domain, a frequency domain, or a spatial domain.

And the first offset information is associated with at least one of: the cell radio network temporary identifier C-RNTI of the terminal, the truncated C-RNTI of the terminal, the recovery identifier information of the terminal and the truncated recovery identifier information of the terminal; the Temporary Mobile Subscriber Identity (TMSI) of the terminal, the offset configured by the network side equipment and the unique index of the terminal in the group.

The first offset information may be transmitted through downlink control information DCI and/or radio resource control RRC message.

The PDCCH bearing the DCI is scrambled by a group RNTI or a C-RNTI, and the first offset information comprises a first offset value corresponding to the terminal or comprises an offset initial value and an offset corresponding to the terminal.

The transmission resources can be distinguished not only in the time domain but also in the frequency domain. The first configuration information may include information of a carrier on which the transmission resource is located, information of a bandwidth part BWP on which the transmission resource is located, or relative frequency offset information.

The transmission resources can be distinguished not only in the time domain and the frequency domain, but also in the spatial domain. The first configuration information may also include SSBs, CSI-RS and/or other beam information associated with the transmission resources.

Of course, all the granularities mentioned above can be combined with each other to achieve more UE differentiation.

In an embodiment of the present application, when the terminal is in an IDLE state and/or an INACTIVE state, the receiving uplink information sent by the terminal specifically includes:

receiving uplink information sent by a terminal through a message and/or a first uplink resource in a random access process;

Wherein the first uplink resource is at least one of:

pre-configuring uplink resources for the terminal;

in free to air mode, uplink resources in other connected cells are allocated.

After the network side device receives the uplink control information, it may perform various adjustments according to the feedback condition, for example, perform retransmission of the data packet according to the received NACK information. And the retransmission of the data packet can adopt unicast retransmission or multicast retransmission according to different conditions. That is to say, in the specific embodiment of the present invention, after receiving the uplink information sent by the terminal through the message in the random access procedure, the method further includes:

And the data retransmitted by the unicast mode can be transmitted by the following modes:

sending indication information retransmitted in a unicast mode;

The data retransmitted by the multicast mode can be transmitted by the following modes:

The configuration information of the second downlink resource may further include retransmission time information.

Wherein the second downlink resource is at least one of:

a downlink resource pre-configured for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, a downlink resource is notified through an RRC signaling;

in free to air mode, a downlink resource in other connected cells is allocated.

Meanwhile, in order to enable all the UEs to receive the data retransmitted by the multicast mode and perform soft combining, the data retransmitted by the multicast mode uses the group radio network temporary identifier.

In the foregoing, in the embodiment of the present invention, the uplink information may be divided into uplink control information and uplink indication information, which describe service conditions, channel conditions, and the like, and the differences are different in different transmission bearers and different description manners, but can adjust the service after being received by the sending end to improve the service quality.

And the first uplink indication information may include at least one of the following information:

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

The uplink information may be sent through PUCCH resources or unicast radio channels, and the uplink information may also be sent through at least one of the following unicast radio channels: a unicast DRB for transmitting unicast traffic, a unicast radio channel for transmitting unicast PDU sessions, a unicast radio channel for transmitting multicast PDU sessions, and a unicast radio channel for transmitting unicast PDU sessions for multicast traffic.

Similarly, for the connected UE, after the uplink information is transmitted, the data retransmitted by the unicast method or the data retransmitted by the multicast method, which is transmitted by the network side according to different situations, may be received. That is to say, in an embodiment of the present application, after receiving the uplink information sent by the terminal, the method further includes:

The retransmitted data is transmitted over one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel B for receiving unicast PDU sessions for multicast traffic.

The unicast wireless channel for sending the uplink information may be a unicast wireless channel configured by the network side device, or a unicast wireless channel selected by the terminal.

Certainly, when the unicast wireless channel is selected by the terminal, the terminal may further notify the network side device of the unicast wireless channel selected by the terminal, so that the network side may receive the unicast wireless channel in a suitable channel, that is, the method of the embodiment of the present invention may further include:

In addition, the uplink information is carried by a PUCCH transmitted on a unicast radio channel, and the PUCCH is scrambled by an RNTI special for the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

Similarly, the sending the multicast-mode retransmitted data to the terminal includes:

the configuration information of the third downlink resource used for the multicast mode retransmission is sent;

The third downlink resource is also used for transmitting data which is sent to the IDLE state and/or INACTIVE state terminal and retransmitted in a multicast mode. In other words, the third downlink resource and the previous second downlink resource may be the same resource.

The third downlink resource may be at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

The configuration information of the third downlink resource may further include retransmission number information.

The data retransmitted by the multicast mode can also use the temporary identifier of the group wireless network, so that all terminals can receive the retransmitted data conveniently.

An embodiment of the present invention further provides another transmission method for improving quality of point-to-multipoint transmission, which is applied to a terminal, and referring to fig. 3, the transmission method provided in this embodiment includes:

step 501, transmitting third uplink control information on transmission resources allocated for point-to-multipoint transmission;

In this way, the network side configures the same transmission resource for the terminal to transmit the corresponding third uplink control information, and the network side can control retransmission according to the situation of the third uplink control information.

In this way, as shown in fig. 4, the transmission method applied to the network side device includes:

step 601, receiving the corresponding third uplink control information sent by all terminals in the same group in a point-to-multipoint manner on the transmission resources allocated for the point-to-multipoint manner sending;

Further, after receiving the third uplink control information, the network side further includes:

In this way, in order to save network resources, only after a certain terminal feeds back NACK, the network side can send retransmission data sent in a point-to-multipoint manner, thereby realizing the comprehensive consideration of improving the service quality and saving the network resources.

In a specific embodiment of the present invention, a priority of retransmission data of the data packet sent in the point-to-multipoint manner is higher than a priority of downlink transmission of Semi-Persistent Scheduling (SPS);

or

Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 5, a first terminal 700 includes:

a first sending module 701, configured to send uplink information;

Further, the first uplink indication information is transmitted through a scheduling request SR, a buffer status report BSR, a media access control element MAC CE, a radio link control RLC signaling, or an uplink data packet.

Further, the first terminal 700 further includes:

a first receiving module, configured to receive first configuration information sent by a network side device, and configure a transmission resource for sending the first uplink control information;

and/or

Further, the first configuration information includes information for transmitting at least one dimension of the transmission resource in a time domain, a frequency domain, or a spatial domain.

Further, the first configuration information includes first offset information of the transmission resources in a time domain with respect to a PDSCH transmitted in a point-to-multipoint manner.

Further, the first offset information is related to at least one of the following information: the cell radio network temporary identifier C-RNTI of the terminal, the truncated C-RNTI of the terminal, the recovery identifier information of the terminal and the truncated recovery identifier information of the terminal; the Temporary Mobile Subscriber Identity (TMSI) of the terminal, the offset configured by the network side equipment and the unique index of the terminal in the group.

Further, the PDCCH carrying the DCI is scrambled by a group RNTI or a C-RNTI, and the first offset information includes a first offset value corresponding to the terminal, or includes an offset initial value and an offset corresponding to the terminal.

Further, the first offset information is selected from a set of offset amounts configured by a network side device.

Further, the first configuration information includes information of a carrier where the transmission resource is located, information of a bandwidth portion BWP where the transmission resource is located, or relative frequency offset information.

Further, the first configuration information includes SSBs, CSI-RS and/or other beam information associated with the transmission resource.

Further, the first terminal 700 further includes:

and the starting and stopping module is used for starting or stopping sending the uplink information under the condition of meeting the starting condition or the stopping condition.

Further, the start-up condition includes at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

and/or:

the stop condition includes at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

Further, in the case that the terminal is in the IDLE state and/or the INACTIVE state, the first terminal 700 further includes:

a second sending module, configured to send the uplink information through a message in a random access procedure and/or a first uplink resource;

Further, the first uplink resource is at least one of:

pre-configuring uplink resources for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, controlling the uplink resource notified by the RRC signaling through the wireless resource;

in free to air mode, uplink resources in other connected cells are allocated.

Further, the first terminal 700 further includes a second receiving module, configured to receive data retransmitted in a unicast manner or data retransmitted in a multicast manner, where the data is sent by a network side device.

Further, the second receiving module is configured to:

receiving indication information of unicast mode retransmission sent by network side equipment;

switching to a connected state;

and receiving the data retransmitted by the unicast mode in a connected state.

Further, the second receiving module is configured to:

Further, the second downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

in the free to air mode, downlink resources in other connected cells are allocated.

Further, the configuration information of the second downlink resource further includes retransmission time information.

Further, the data retransmitted in the multicast mode uses a group radio network temporary identifier.

Further, the first uplink indication information includes at least one of the following information:

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

Further, the uplink information is sent through PUCCH resources or a unicast wireless channel.

Further, the uplink information is sent through at least one of the following unicast wireless channels: a unicast radio channel for transmitting unicast traffic, a unicast radio channel for transmitting unicast PDU sessions, a unicast radio channel for transmitting multicast PDU sessions, and a unicast radio channel for transmitting unicast PDU sessions for multicast traffic.

Further, the first terminal 700 further includes a third receiving module, configured to receive data retransmitted in a unicast manner or data retransmitted in a multicast manner, where the data is sent by a network side device.

Further, the retransmitted data is transmitted through one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel for receiving unicast PDU sessions for multicast traffic.

Further, the unicast wireless channel for sending the uplink information is a unicast wireless channel configured by the network side device, or a unicast wireless channel selected by the terminal.

Further, the first terminal 700 further includes a third sending module, configured to send connection indication information to indicate the unicast wireless channel connection selected by the terminal.

Further, the uplink information is carried by a PUCCH transmitted on a unicast radio channel, and the PUCCH is scrambled by an RNTI dedicated to the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

And the third downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

The first terminal 700 can implement each process implemented by the terminal in the method embodiment shown in fig. 1, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 6, a third terminal 900 includes:

a third sending module 901, configured to send the corresponding third uplink control information in the point-to-multipoint manner on the transmission resource allocated for the point-to-multipoint manner sending;

The third terminal 900 can implement each process implemented by the terminal in the method embodiment shown in fig. 3, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 7, a first network-side device 1000 includes:

a first receiving module 1001, configured to receive uplink information sent by a terminal;

Further, the first network side device 1000 further includes a first sending module, configured to send first configuration information, and configured to configure a transmission resource for sending the first uplink control information;

and/or

Further, the first configuration information includes information of at least one dimension of the transmission resource in a time domain, a frequency domain, or a spatial domain.

Further, when the terminal is in an IDLE state and/or an INACTIVE state, the first network-side device 1000 further includes:

a second sending module, configured to receive, through a message in a random access procedure and/or a first uplink resource, uplink information sent by a terminal;

Further, the first uplink resource is at least one of:

an uplink resource pre-configured for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, notifying an uplink resource through an RRC (radio resource control) signaling;

in free to air mode, a share of uplink resources in other connected cells are allocated.

Further, the first network-side device 1000 further includes a third sending module, configured to send data retransmitted in a unicast manner or data retransmitted in a multicast manner.

Further, the third sending module is configured to send unicast retransmission indication information;

and sending the unicast retransmission data corresponding to the unicast retransmission indication information.

Further, the third sending module is configured to send configuration information of a second downlink resource for multicast retransmission;

Further, the second downlink resource is at least one of:

a downlink resource pre-configured for the terminal;

in free to air mode, a downlink resource in other connected cells is allocated.

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

Further, the first network side device 1000 further includes a fourth sending module, configured to send data retransmitted in a unicast manner or data retransmitted in a multicast manner to the terminal.

Further, the first network-side device 1000 further includes a second receiving module, configured to receive connection indication information indicating that the terminal selects the unicast wireless channel connection.

Further, the uplink information is carried by a PUCCH transmitted over a unicast radio channel connection, the PUCCH being scrambled by an RNTI dedicated to the terminal; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

The third downlink resource may be at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

The first network side device 1000 can implement each process implemented by the network side device in the method embodiment shown in fig. 2 and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 8, a third network-side device 1200 includes:

a third receiving module 1201, configured to receive, on the transmission resource allocated for the point-to-multipoint transmission, the corresponding third uplink control information sent by all terminals in the same group in the point-to-multipoint manner;

the third uplink control information includes at least one of the following information:

HARQ feedback information of a data packet transmitted by the point-to-multipoint method, HARQ NACK information of the data packet transmitted by the point-to-multipoint method, and CSI transmitted by the point-to-multipoint method.

Further, the third network side device 1200 further includes a second receiving module, configured to send retransmission data sent in the point-to-multipoint manner when the number of the received NACK messages sent in the point-to-multipoint manner exceeds a predetermined threshold, or energy accumulation corresponding to the received NACK messages sent in the point-to-multipoint manner exceeds a predetermined threshold.

Further, the priority of the retransmission data of the data packet sent in the point-to-multipoint manner is higher than the priority of downlink transmission scheduled by the SPS;

or

The priority of the retransmission data of the data packet sent in the point-to-multipoint mode is higher than the priority of the downlink transmission of the unicast service.

The third network side device 1200 can implement each process implemented by the network side device in the method embodiment shown in fig. 4 and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 9, an embodiment of the present invention further provides a network-side device, which includes a bus 1301, a transceiver 1302, an antenna 1303, a bus interface 1304, a processor 1305, and a memory 1306.

In an embodiment of the present application, the transceiver 1302 is configured to receive uplink information sent by a terminal;

Further, the transceiver 1302 is further configured to send first configuration information, configured to configure a transmission resource for sending the first uplink control information;

and/or

Further, the first configuration information includes first offset information of the transmission resource in a time domain with respect to a PDSCH transmitted in a point-to-multipoint manner.

Further, when the terminal is in an IDLE state and/or an INACTIVE state, the transceiver 1302 is further configured to receive uplink information sent by the terminal through a message in a random access procedure and/or a first uplink resource; wherein the message in the random access procedure includes at least one of the following: MSG a in the two-step random access procedure, MSG1 in the four-step random access procedure, and MSG3 in the four-step random access procedure.

Further, the first uplink resource is at least one of:

an uplink resource pre-configured for the terminal;

before the terminal is switched from the connection state to the IDLE state and/or the INACTIVE state, controlling an uplink resource notified by an RRC (radio resource control) signaling through a wireless resource;

Further, the transceiver 1302 is further configured to transmit data retransmitted in a unicast manner or data retransmitted in a multicast manner.

Further, the transceiver 1302 is further configured to send indication information of retransmission in a unicast manner;

Further, the transceiver 1302 is further configured to send configuration information of a second downlink resource for multicast retransmission;

Further, the second downlink resource is at least one of:

a downlink resource pre-configured for the terminal;

in free to air mode, a downlink resource in other connected cells is allocated.

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

Further, the transceiver 1302 is further configured to send data retransmitted in a unicast manner or data retransmitted in a multicast manner to the terminal.

Further, the transceiver 1302 is further configured to receive connection indication information indicating the unicast wireless channel selected by the terminal.

The third downlink resource may be at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

The network side device in the foregoing embodiment can implement each process implemented by the network side device in the method embodiment shown in fig. 2 and achieve the same effect, and for avoiding repetition, details are not described here again.

In another embodiment of the present application, the transceiver 1302 is configured to receive third uplink control information sent by all terminals in the same group on a transmission resource allocated for point-to-multipoint transmission;

Further, the transceiver 1302 is further configured to transmit the retransmission data transmitted in the point-to-multipoint manner when the number of the received NACK messages transmitted in the point-to-multipoint manner exceeds a predetermined threshold, or the energy accumulation corresponding to the received NACK messages transmitted in the point-to-multipoint manner exceeds a predetermined threshold.

or

The network side device in the foregoing embodiment can implement each process implemented by the network side device in the method embodiment shown in fig. 4 and achieve the same effect, and for avoiding repetition, details are not described here again.

In FIG. 9, a bus architecture (represented by the bus 1301), the bus 1301 can include any number of interconnected buses and bridges, the bus 1301 linking together various circuits including one or more processors, represented by the processor 1305, and memory, represented by the memory 1306. The bus 1301 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 1304 provides an interface between the bus 1301 and the transceiver 1302. The transceiver 1302 may be one element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 1305 is transmitted over a wireless medium through the antenna 1303, and further, the antenna 1303 receives the data and transmits the data to the processor 1305.

The processor 1305 is responsible for managing the bus 1301 and general processing, and may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 1306 may be used to store data used by the processor 1305 in performing operations.

Alternatively, the processor 1305 may be a CPU, ASIC, FPGA or CPLD.

Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor 1305, a memory 1306, and a computer program stored in the memory 1306 and capable of running on the processor 1305, where the computer program, when executed by the processor 1305, implements the processes in the transmission method embodiments shown in fig. 2 and fig. 4, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Fig. 10 is a schematic structural diagram of a terminal for implementing various embodiments of the present invention, where the terminal 1400 includes, but is not limited to: a transceiver unit 1401, a network module 1402, an audio output unit 1403, an input unit 1404, a sensor 1405, a display unit 1406, a user input unit 1407, an interface unit 1408, a memory 1409, a processor 1410, and a power supply 1414. Those skilled in the art will appreciate that the terminal configuration shown in fig. 10 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

In an embodiment of the present application, the transceiving unit 1401 is configured to transmit uplink information;

Further, the transceiving unit 1401 is further configured to:

and/or

Further, the transceiver 1401 is further configured to start or stop transmitting the uplink information when a start condition or a stop condition is satisfied.

the number of the participating terminals is less than a preset threshold;

and/or:

the stop condition includes at least one of the following conditions:

the number of the participating terminals is less than a preset threshold;

Further, the transceiver unit 1401 is further configured to send the uplink information through a message and/or a first uplink resource in a random access procedure; wherein the message in the random access procedure includes at least one of the following: MSG a in the two-step random access procedure, MSG1 in the four-step random access procedure, and MSG3 in the four-step random access procedure.

Further, the first uplink resource is at least one of:

an uplink resource pre-configured for the terminal;

Further, the transceiver 1401 is further configured to receive data retransmitted by the network side device in the unicast manner or data retransmitted by the multicast manner.

Further, the transceiver unit 1401 is further configured to receive indication information of unicast retransmission sent by the network side device;

switching to a connected state;

and receiving the data retransmitted by the unicast mode in a connected state.

Further, the transceiver unit 1401 is further configured to receive configuration information of a second downlink resource for multicast retransmission, which is sent by the network side device;

Further, the second downlink resource is at least one of:

a downlink resource pre-configured for the terminal;

in free to air mode, a downlink resource in other connected cells is allocated.

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

DRB sequence number information for multicast.

Further, the transceiving unit 1401 is further configured to send connection indication information indicating the unicast wireless channel connection selected by the terminal.

And the third downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

and downlink resources notified through RRC dedicated signaling.

The terminal of the foregoing embodiment can implement each process implemented by the terminal in the method embodiment shown in fig. 1 and achieve the same effect, and is not described here again to avoid repetition.

In another embodiment of the present application, the transceiver unit 1401 is configured to transmit the third uplink control information on the transmission resource allocated for the point-to-multipoint transmission;

The terminal in the foregoing embodiment can implement each process implemented by the terminal in the method embodiment shown in fig. 3 and achieve the same effect, and is not described here again to avoid repetition.

It should be understood that, in the embodiment of the present invention, the transceiver unit 1401 may be configured to receive and transmit signals during a process of transmitting and receiving information or a call, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1410; in addition, the uplink data is transmitted to the base station. In general, the transceiver unit 1401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. The transceiving unit 1401 may also communicate with a network and other devices through a wireless communication system.

The terminal provides the user with wireless broadband internet access through the network module 1402, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 1403 may convert audio data received by the transceiving unit 1401 or the network module 1402 or stored in the memory 1409 into an audio signal and output as sound. Also, the audio output unit 1403 may also provide audio output related to a specific function performed by the terminal 1400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1403 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1404 is for receiving an audio or video signal. The input Unit 1404 may include a Graphics Processing Unit (GPU) 14041 and a microphone 14042, the Graphics processor 14041 Processing image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1406. The image frames processed by the graphics processor 14041 may be stored in the memory 1409 (or other storage medium) or transmitted via the transceiving unit 1401 or the network module 1402. The microphone 14042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the transceiving unit 1401 in case of a phone call mode.

Terminal 1400 also includes at least one sensor 1405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 14061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 14061 and/or the backlight when the terminal 1400 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1405 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 1406 is used to display information input by the user or information provided to the user. The Display unit 1406 may include a Display panel 14061, and the Display panel 14061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1407 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1407 includes a touch panel 14071 and other input devices 14072. The touch panel 14071, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 14071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 14071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1410, receives a command from the processor 1410, and executes the command. In addition, the touch panel 14071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 14071, the user input unit 1407 may include other input devices 14072. In particular, the other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 14071 may be overlaid on the display panel 14061, and when the touch panel 14071 detects a touch operation on or near the touch panel 14071, the touch operation is transmitted to the processor 1410 to determine the type of the touch event, and then the processor 1410 provides a corresponding visual output on the display panel 14061 according to the type of the touch event. Although in fig. 10, the touch panel 14071 and the display panel 14061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 14071 and the display panel 14061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 1408 is an interface to which an external device is connected with the terminal 1400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1408 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within terminal 1400 or may be used to transmit data between terminal 1400 and external devices.

The memory 1409 may be used to store software programs as well as various data. The memory 1409 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 1409 can include high speed random access memory and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1410 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 1409 and calling data stored in the memory 1409, thereby performing overall monitoring of the terminal. Processor 1410 may include one or more processing units; preferably, the processor 1410 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1410.

The terminal 1400 may also include a power supply 1410 (e.g., a battery) for providing power to various components, and preferably, the power supply 1410 may be logically coupled to the processor 1410 via a power management system, such that functions including managing charging, discharging, and power consumption are performed via the power management system.

In addition, terminal 1400 includes some functional modules that are not shown, and are not described herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 1410, a memory 1409, and a computer program stored in the memory 1409 and capable of running on the processor 1410, where the computer program, when executed by the processor 1410, implements the processes in the transmission method embodiments shown in fig. 1 to fig. 4, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the transmission method embodiments shown in fig. 1 to 4, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A transmission method applied to a terminal is characterized in that the transmission method comprises the following steps:

sending uplink information;

the first uplink control information includes at least one of the following information: hybrid automatic repeat request (HARQ) feedback information of a data packet sent in a point-to-multipoint mode, error response (NACK) information of HARQ of the data packet sent in the point-to-multipoint mode and Channel State Information (CSI);

2. The transmission method according to claim 1, wherein the first uplink indication information is transmitted via a scheduling request SR, a buffer status report BSR, a media access control element MAC CE, radio link control RLC signaling, or an uplink data packet.

3. The transmission method according to claim 1, wherein before the sending the uplink information, further comprising:

and/or

4. The transmission method according to claim 3, wherein the first configuration information comprises information of at least one dimension of the transmission resources in a time domain, a frequency domain or a spatial domain.

5. The transmission method according to claim 4, wherein the first configuration information includes first offset information of the transmission resource in a time domain with respect to a PDSCH transmitted in a point-to-multipoint manner.

6. The transmission method according to claim 5, wherein the first offset information relates to at least one of: the cell radio network temporary identifier C-RNTI of the terminal, the truncated C-RNTI of the terminal, the recovery identifier information of the terminal and the truncated recovery identifier information of the terminal; the Temporary Mobile Subscriber Identity (TMSI) of the terminal, the offset configured by the network side equipment and the unique index of the terminal in the group.

7. The transmission method according to claim 5, wherein the first offset information is transmitted via downlink control information DCI and/or radio resource control RRC message.

8. The transmission method according to claim 7, wherein a Physical Downlink Control Channel (PDCCH) carrying the DCI is scrambled by a group Radio Network Temporary Identity (RNTI) or a C-RNTI, and the first offset information comprises a first offset value corresponding to the terminal or comprises an offset initial value and an offset corresponding to the terminal.

9. The transmission method according to claim 5, wherein the first offset information is selected from a set of offset amounts configured by a network side device.

10. The transmission method according to claim 4, wherein the first configuration information includes information of a carrier on which the transmission resource is located, information of a bandwidth portion BWP on which the transmission resource is located, or relative frequency offset information.

11. The transmission method according to claim 4, wherein the first configuration information comprises a Synchronization Signal Block (SSB) associated with the transmission resource, a channel state information reference signal (CSI-RS) and/or other beam information.

12. The transmission method according to claim 1, wherein, when the terminal is in an IDLE state and/or an INACTIVE state, the sending the uplink information specifically includes:

13. The transmission method according to claim 12,

the first uplink resource is at least one of:

an uplink resource pre-configured for the terminal;

in the free mode, uplink resources in other connected cells are allocated.

14. The transmission method according to claim 12, wherein after the sending the uplink information through the message in the random access procedure and/or the first uplink resource, further comprising:

15. The transmission method according to claim 1, wherein the first uplink indication information includes at least one of the following information:

sequence number information of the data packet;

receiving state information of the data packet;

receiving time information of the data packet;

reception state information of the data packet indicated by the bit;

sequence number information of the initial data packet;

a sequence number signal of the finished data packet;

multicast type indication information;

multicast group number information;

multicast group identification information;

name information of the multicast group;

the multicast data radio carries DRB sequence number information.

16. The transmission method according to claim 1, wherein the uplink information is transmitted by means of a PUCCH resource or a unicast radio channel.

17. The transmission method according to claim 1, wherein after the sending the uplink information, further comprising:

18. The transmission method according to claim 17, wherein the retransmitted data is transmitted through at least one of the following unicast wireless channels: a unicast radio channel for receiving unicast traffic, a unicast radio channel for receiving unicast PDU sessions, a unicast radio channel for receiving multicast PDU sessions, and a unicast radio channel for receiving unicast PDU sessions for multicast traffic.

19. The transmission method according to claim 16, wherein the unicast radio channel for sending the uplink information is a unicast radio channel configured by a network side device, or a unicast radio channel selected by a terminal.

20. The transmission method according to claim 19, further comprising:

21. The transmission method according to claim 16, wherein the uplink information is carried by a PUCCH transmitted on a unicast radio channel, the PUCCH being scrambled by a terminal-specific RNTI; the RNTI is also used to determine an offset of a transmission resource for transmitting the first uplink control information.

22. A transmission method is applied to a network side device, and is characterized in that the transmission method comprises the following steps:

receiving uplink information sent by a terminal;

23. The transmission method according to claim 22, wherein the first uplink indication information is transmitted via a scheduling request SR, a buffer status report BSR, a media access control element MAC CE, radio link control RLC signaling, or an uplink data packet.

24. The transmission method according to claim 22, wherein before receiving the uplink information sent by the terminal, the method further comprises:

and/or

25. The transmission method according to claim 24, wherein the first configuration information comprises information of at least one dimension of the transmission resources in a time domain, a frequency domain or a spatial domain.

26. The transmission method according to claim 25, wherein the first configuration information includes first offset information of the transmission resource in a time domain with respect to a PDSCH (physical downlink shared channel) transmitted in a point-to-multipoint manner.

27. The transmission method according to claim 26, wherein the first offset information relates to at least one of: the cell radio network temporary identifier C-RNTI of the terminal, the truncated C-RNTI of the terminal, the recovery identifier information of the terminal and the truncated recovery identifier information of the terminal; the Temporary Mobile Subscriber Identity (TMSI) of the terminal, the offset configured by the network side equipment and the unique index of the terminal in the group.

28. The transmission method according to claim 26, wherein the first offset information is transmitted via downlink control information DCI and/or radio resource control RRC message.

29. The transmission method according to claim 22, wherein, when the terminal is in an IDLE state and/or an INACTIVE state, the receiving uplink information sent by the terminal specifically includes:

30. The transmission method according to claim 29, wherein the first uplink resource is at least one of:

pre-configuring uplink resources for the terminal;

in the free mode, uplink resources in other connected cells are allocated.

31. The transmission method according to claim 29, wherein after receiving the uplink information sent by the terminal through the message in the random access procedure, the method further comprises:

32. The transmission method according to claim 31, wherein sending the data retransmitted in a unicast manner comprises:

sending indication information retransmitted in a unicast mode;

33. The transmission method according to claim 31, wherein transmitting the multicast-retransmitted data comprises:

34. The transmission method according to claim 33, wherein the second downlink resource is at least one of:

pre-configuring downlink resources for the terminal;

in the free mode, downlink resources in other connected cells are allocated.

35. A transmission method applied to a terminal is characterized in that the transmission method comprises the following steps:

the third uplink control information includes at least one of the following information: hybrid automatic repeat request (HARQ) feedback information of the data packet transmitted by the point-to-multipoint mode, error response (NACK) information of HARQ of the data packet transmitted by the point-to-multipoint mode and Channel State Information (CSI).

36. A transmission method is applied to a network side device, and is characterized in that the transmission method comprises the following steps:

37. The transmission method according to claim 36, further comprising:

38. The transmission method according to claim 37, characterized in that:

or

39. A terminal, comprising: a processor and a transceiver;

the transceiver is used for transmitting uplink information;

40. A terminal, comprising:

a sending module, configured to send uplink information;

41. A terminal comprising a processor and a transceiver;

the transceiver is configured to send third uplink control information on the transmission resource allocated for the point-to-multipoint transmission;

42. A terminal, comprising:

a sending module, configured to send third uplink control information on the transmission resource allocated for point-to-multipoint transmission;

43. A network-side device, comprising: a processor and a transceiver;

the transceiver is used for receiving uplink information sent by the terminal;

44. A network-side device, comprising:

45. A network-side device, comprising: a processor and a transceiver;

46. A network-side device, comprising:

47. A terminal comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps in the transmission method according to any one of claims 1 to 21 or the computer program when executed by the processor implementing the steps in the transmission method according to claim 35.

48. A network-side device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the computer program when executed by the processor implements the steps in the transmission method according to any one of claims 22 to 34 or wherein the computer program when executed by the processor implements the steps in the transmission method according to any one of claims 36 to 38.

49. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps in the transmission method according to one of the claims 1 to 21, or which computer program, when being executed by the processor, carries out the steps in the transmission method according to one of the claims 22 to 34, or which computer program, when being executed by the processor, carries out the steps in the transmission method according to claim 35, or which computer program, when being executed by the processor, carries out the steps in the transmission method according to one of the claims 36 to 38.